*This post may contain affiliate links. Please see my disclosure to learn more.
Mac and cheese is iconic comfort food that just about everyone loves. There are numerous vegan mac and cheese recipes because, even if you swear off dairy, saying no to macaroni and cheese is too much to expect from any human being.
If you’re up to the [easy] challenge of making your own mac and cheese from scratch, it’s always a great idea to multiply your batch so that you can cook once and eat many, many meals.
So can you freeze mac and cheese? Yes, you can freeze leftover mac and cheese for up to 18 months, though it will retain the best quality when eaten within 6 months. Make sure the mac n cheese reaches room temperature before putting it in the freezer to reduce condensation and freezer burn.
As with any pasta + dairy casserole, you have to set it up properly in order to have success reheating it from the freezer.
If you don’t want runny, mushy, odd textured mac and cheese, you’ll want to follow a few simple steps to freezing it properly. We’ll detail those steps and answer all your macaroni and cheese freezer related questions in this article.
How to Freeze Mac and Cheese
Freezing macaroni and cheese isn’t too difficult, but pasta and dairy can both be quite temperamental when it comes to freezing temperatures, so there are a few strategies to follow to help you get the best results from your frozen mac and cheese.
To start, we’ll outline the basic process for freezing any type or style of macaroni and cheese, and then, a bit later in the article, we’ll discuss some specific adaptations for the many different types of mac and cheese you might be freezing.
The first question you’ll have to decide on is whether you should freeze mac and cheese before or after baking it.
In some cases, it will depend on whether you’re planning ahead or simply dealing with too much food. Either way, you can freeze your mac and cheese effectively following a few basic steps.
How to Freeze Cooked Mac and Cheese
If you have leftover, cooked mac and cheese of any variety, here are the best steps to follow to freeze it so that it reheats well.
- Make sure your mac and cheese is room temperature, especially if you’re going to be transferring into plastic freezer-safe Tupperware containers.
- Never place anything hot into plastic containers, even if it says BPA free. You have to wait for it to be cool before putting it in your freezer anyway, so just let it completely cool before separating to take all necessary health precautions.
- Reusable or disposable aluminum tins also work well for freezing single portion sizes because you can transfer them directly into your oven for baking
- Separate the leftovers into single meal-sized serving.
- Place a layer of plastic wrap on the surface of your macaroni and cheese.
- Seal the lid tightly so that no air can enter the container, or wrap with aluminum foil carefully sealing all edges tightly.
- NOTE: Your mac and cheese will expand slightly as it freezes, so make sure there is about half an inch of headspace left between the surface of your macaroni and the lid.
- Cool the macaroni and cheese in the fridge before putting it in your freezer so that less condensation forms inside the container due to the temperature difference
- Label the container with the date that you’re putting it into the freezer.
- Freeze for up to 18 months. Use within 6 months for the best quality.
So now you know you can freeze leftover mac and cheese, and it’s not even really that hard.
Freezing Single Portion Sizes of Cooked Mac and Cheese
If you are going to be reheating your mac and cheese for 1 person at a time, a really great way to separate and freeze your macaroni is to use muffin tins.
Grease each muffin groove generously with butter and fill with macaroni. Don’t be shy about packing it tightly. The more squished you get your pasta the less air will be between each noodle and the better it will freeze overall.
When you’re happy with the serving sizes, cover the tin with aluminum foil, carefully creating a seal around each serving of mac and cheese.
Place the entire tray in your freezer and leave it there for at least 3-6 hours to be sure the pasta is thoroughly frozen.
You can now remove it from your freezer and transfer the frozen servings to a more suitable freezer-safe container.
You can use any of the following, depending on which is most convenient for you and will fit in your freezer:
- Wrap each serving individually with plastic wrap or aluminum foil and fit into your freezer wherever there is space.
- In a freezer-safe Ziploc bag, layer the mac and cheese servings in a single row, making sure you can press all the air out and seal it tightly before placing it flat in your freezer
- Place the individual servings inside a freezer-safe Tupperware container in a single layer, preferably individually wrapped to protect them from moisture and freezer burn.
How to Freeze Mac and Cheese Before You Bake It
Freezing mac and cheese before you bake it often leads to a slightly better quality serving. You’re less likely to have pasta that is too soft and the sauce will be creamier.
There’s also less risk of developing the grainy texture that sometimes comes with the frozen dairy territory.
Even though it has a slight edge over-cooking it and then freezing, you still have to take strategic steps to make sure it freezes well.
- Prepare your mac and cheese according to the recipe, stopping the process right before the step that says, “put it in the oven”
- If you’re making mac and cheese that will be baked, transfer it to a freezer-safe, oven-safe baking dish so that it can be transferred directly from your freezer to your oven when you’re ready to cook it
- If you’re making mac and cheese that you’ll reheat on the stovetop, transfer it to freezer-safe containers in single meal serving sizes
- Make sure your mac and cheese is room temperature before covering it
- For baked mac and cheese, cover your baking dish with a layer of aluminum foil, carefully sealing all edges. Don’t hesitate to add a 2nd layer of aluminum foil for added safety – you do not your mac and cheese exposed to any air or moisture while it’s in the freezer
- For stovetop mac and cheese, place a layer of plastic wrap on top of the macaroni before sealing it with the air-tight lid
- Cool the macaroni and cheese in the fridge before putting it in your freezer so that less condensation forms inside the container due to the temperature difference
- Label the container(s) with the date that you’re putting it into the freezer
- Freeze for up to 18 months. Use within 6 months for the best quality.
Pro Tips: Making Macaroni and Cheese That Freezes Better
If you’re making your mac and cheese with the purpose or full knowledge that you will be freezing it, here are a few tips to consider during the cooking process:
- Swap your regular dairy milk for milk powder. Even though it reconstitutes with the water you use in your recipe, it freezes and bakes better than standard dairy will.
- Alternatively, add some cream cheese or heavy cream to your sauce to increase the fat content and avoid using skim milk – the higher the fat content, the less likely it is to split when it freezes.
- Cook your macaroni until it’s al dente before adding the sauce. As it bakes it will finish cooking without going too soft.
- If you’re baking your mac and cheese, add a layer of shredded cheese to the surface of your macaroni before you cook it. This will protect the macaroni from getting hard and crunchy as it bakes, which will only become worse if it’s then frozen and reheated.
- Again if you’re baking instead of making your mac and cheese stovetop, cook at a low temperature, like 375F, for slightly longer, 35 – 40 minutes. This will keep the dairy as smooth as possible, which will set it up for better success in the freezer.
Freezing Macaroni and Cheese – Types & Variations
The above methods are all you need for standard homemade mac and cheese, whether you’re baking it or cooking it on your stovetop, and whether you’re baking it before or after you’ve frozen it.
But there are other variations of mac and cheese that we need to consider for their ability to freeze well.
Can you freeze Kraft Mac and Cheese?
Yes, you can freeze Kraft Mac and Cheese after it’s cooked.
The powder cheese includes milk, so if you know you’re going to be freezing it, you can make your sauce with only butter and water instead of adding more milk. This will prevent the dairy from breaking down in your freezer.
If you truly prefer the sauce made with milk, it will still freeze fine but you will have to give it a good stir when you’re ready to eat it. It will warm up best if you thaw it completely and then slowly heat it on the stovetop.
Leftover Kraft Mac and Cheese, whether previously frozen or not, tends to get crunchy in the microwave if you’re not careful.
Can you freeze cheese sauce for mac and cheese?
Yes, in fact, freezing cheese sauce for mac and cheese is a great way to make sure you’re pasta cooks up perfectly when you’re ready to make your meal.
The cheese sauce is really what takes the most time, so making it ahead even without mixing it into your macaroni is a great idea.
The secret is to use high-fat content dairy and freeze it in single-meal serving sizes. Even if the dairy separates a bit, you can whisk it back together while you’re macaroni cooks.
To freeze cheese sauce, simply make it as per your recipe and then wait until it is completely cooled. Pour as much as you’ll need for a single meal into a freezer-safe Ziploc bag.
Seal the bag 95% of the way and very carefully lay it flat on your counter. Let the sauce settle into an even layer with no air left inside the bag. Finish sealing before any of the sauce leaks out.
Label it with the date and lay it flat in your freezer to store for up to 6 months.
Can you freeze vegan mac and cheese?
As a general rule, yes, you can freeze vegan mac and cheese by following the same instructions as listed above. There are a few caveats to keep in mind, however.
First, vegan mac and cheese can be made in many different ways. Some of the most popular recipes call for some combinations of the following ingredients:
- Storebought vegan cheese
- Nutritional yeast
- Butternut squash
- Potatoes and carrots
- Non-dairy milk
The biggest concern is going to be the non-dairy milk, as they are almost all known for splitting when frozen. A good way to compensate for this is to make and freeze your sauce separately from your macaroni so that you can recombine it before serving it.
If you make it with cashews or other nuts and seeds, it will freeze better because the fat content will be higher.
Related Questions About Frozen Mac And Cheese
How to make frozen mac and cheese better?
If you’re trying to make homemade mac and cheese better for the freezing process, our best tip is to use dry milk instead of regular dairy.
You can also add flavor enhancers such as Dijon, paprika, or nutmeg which will bring out the flavor of your cheese even after it’s been frozen.
If you’re reheating it on the stovetop, you can add a bit of fresh milk, butter, and even more shredded cheese to refresh the sauce, as well as mix in some chopped up veggies, capers or shredded chicken for more variety.
If you’re trying to liven up a frozen dinner from the freezer section of your supermarket, first you want to make sure you bake it instead of choosing the quick and easy microwave option.
The oven baking adds a lot to the flavor. Add some shredded cheese to the top of the macaroni before baking it. Once it’s cooked, you can mix in some broccoli, bacon bits, or tomatoes for added flavor, texture, and color.
How long can you keep mac and cheese in the freezer?
If you’re stored it properly, according to all the directions above, your mac and cheese will stay fresh in your freezer for 6 to 18 months.
The sooner you eat it, the better the flavor will be, but if you’ve been careful in the packaging, it should stay in good quality for at least a year.
Can you refreeze frozen mac and cheese?
You can, but only carefully and with the full understanding that refrozen frozen macaroni and cheese will be softer, less smooth, and probably with less cheesy flavor that the original.
The first rule is to only refreeze it if it was originally thawed in your refrigerator or put directly into your oven. If it spent any time on your counter thawing, don’t refreeze it. There’s too much risk of having bacteria develop that will spoil your food even if it doesn’t make you sick.
Second, if you’ve added milk to freshen up the sauce, it will not freeze as well. The dairy might separate. The pasta will be mushier. And the sauce will be less flavorful.
If you’re ok with those caveats, you can refreeze your frozen mac and cheese. Our suggestion is, next time, freeze it in smaller serving sizes so that you don’t have to refreeze it.
Conclusion: Can You Freeze Mac and Cheese?
Can you freeze mac and cheese? Yes, you definitely can.
We sincerely recommend that if you’re going through the trouble of making a batch of creamy homemade mac and cheese, you definitely should double or triple the batch and freeze as much as possible.
It lasts more than a year in your freezer and makes a simple, quick, and utterly delicious meal on demand in about half an hour when you’re ready to eat it.
Up Next: The Best Cheese For Fondue
Yes, you can! Freezing Mac and Cheese is a great way to keep leftovers, saving them for a busy night when there's no time to cook. Learn our tips and trick for how to reheat mac and cheese too. Whether you make Mac and cheese from a box or a homemade recipe, you can freeze any leftovers.Can you freeze macaroni and cheese after it's cooked? ›
Yes, you can! Freezing Mac and Cheese is a great way to keep leftovers, saving them for a busy night when there's no time to cook. Learn our tips and trick for how to reheat mac and cheese too. Whether you make Mac and cheese from a box or a homemade recipe, you can freeze any leftovers.Why is macaroni cheese not suitable for freezing? ›
Freezing macaroni and cheese that is still warm will result in a mushy mess after thawing, so be patient! Once your macaroni and cheese is cool, it's time to freeze. If you are freezing an entire casserole, then it's recommended to prepare it in a freezer-safe container, or to scoop it into one for freezing.How do you defrost frozen mac and cheese? ›
The best way to thaw frozen mac and cheese is always overnight, in the fridge. Otherwise, on the counter for a couple of hours. And at the last resort, directly in the microwave but this tends to dry it out often, will vary by recipe.Should you freeze macaroni and cheese before or after cooking? ›
You can either freeze it after it's baked (and then reheat it when it's time to eat) or you can prepare your mac and cheese, but freeze it before baking. If you freeze it before baking, it tends to come out creamier and less grainy when it's time to cook it because it hasn't been heated up twice.How long will mac and cheese last in fridge? ›
Store leftover mac and cheese in a sealed air-tight container in the fridge for up to 4 days for best quality.Can you freeze cooked macaroni with sauce? ›
Yes! You can freeze cooked noodles with sauce. Simply follow the same instructions as freezing pasta without sauce. Reheat in the microwave, adding a little bit of water or broth if needed to thin out the sauce.What cheeses should not be frozen? ›
- Cottage cheese.
- Queso fresco.
yes! Like lasagna and other cheesy pasta casseroles, mac and cheese freezes well. You can freeze it in separate containers, too, for easy lunch reheating.How do you make frozen mac and cheese taste good? ›
Brown the mac and cheese under the broiler for a couple of minutes and voila, amped up mac and cheese. Adding fresh vegetables, herbs, and seasonings helps tailor frozen dinners to your own personal taste and make bland freezer meals taste a little more homemade.
⏲ Can you put frozen Costco mac and cheese in the oven? Yes, you can cook Costco mac and cheese from frozen. Put the contents of half the tray in a metal baking pan, and cover with foil. Place the pan on a dark cookie sheet and bake in an oven preheated to 400F (200C) for 60 minutes.How do you reheat thawed mac and cheese? ›
- Place the macaroni & cheese into an oven-safe dish. Make sure to only take out what you're going to use.
- Add 1 tablespoon of milk per cup of mac and cheese and mix to incorprate as much as possible. ...
- Cover the dish with aluminum foil and place in the oven at 350°F for 20-30 minutes, or until heated through.
No, it's not necessary to cover mac and cheese while it bakes. You want the topping to become golden brown and crispy so baking uncovered is a must.Can you freeze casseroles with milk in them? ›
Avoid freezing casseroles made with dairy products (especially soft cheeses with a high-water content like ricotta or cottage), eggs, starchy vegetables, and watery vegetables like lettuce and cucumber.How do you keep macaroni and cheese moist? ›
Add more cheese
That final layer of cheese on top isn't just for looks; it also helps keep the saucy noodles underneath from drying out during baking. Breadcrumbs also help insulate the noodles, acting as a protective layer while baking that also happens to add a nice little crunch.
How to tell if cooked macaroni and cheese is bad? If cooked macaroni and cheese develops an off odor, flavor or appearance, or if mold appears, it should be discarded.Can I eat mac and cheese after 5 days? ›
Cooked macaroni and cheese (recipe) should be stored in an airtight container in the refrigerator. This should be eaten during the next three to five days as well. However, if you want to retain the mac and cheese for a longer period of time, you can freeze it. In a 40 degree refrigerator five days, safely.Can you leave mac and cheese out for a few hours? ›
Like all other food, mac and cheese can only sit out at room temperature for two hours before entering the “danger zone.” If temperatures are high, above 90 °F, mac and cheese should not be left out for longer than one hour.Can you freeze mashed potatoes? ›
Schmidt tells us that, for best results, you can keep mashed potatoes in "a freezer set to 0°F or colder" for "up to one year." At this temperature and for this length of time, frozen mashed potatoes can be thawed and reheated without losing texture or flavor (and without risking the transmission of foodborne bacteria) ...Can you freeze pasta sauce in Ziploc bags? ›
Allow your sauce to cool completely before packaging. For larger quantities, place sauce in a quart-size zip-top plastic bag and freeze flat on a baking sheet. Once frozen, you can stack the baggies to save space.
Cool the pasta slightly, then drizzle with a little olive oil or cooking oil and toss gently. Use about 1 tablespoon oil to 8 ounces cooked pasta. This helps prevent the pasta from sticking together when frozen. Spoon into airtight containers or freezer bags.How do you reheat macaroni and cheese without drying it out? ›
- Store leftovers right. ...
- Add one tablespoon of milk per cup of macaroni and cheese.
- Reheat at 50 percent power, stirring every minute or so.
- When the mac and cheese has reached its desired temperature, add a touch of butter to bring it back to life.
Let it stand on the counter until cooled, the wrap in plastic wrap and pop in the freezer. When you're ready to eat it, it can go straight from the freezer into in a 400°F oven. Cook for 1 hour, covered with foil, the take the foil off and bake for another 15-20 minutes to brown the top.How do I make store bought frozen mac and cheese better? ›
Transfer the cooked mac n' cheese to a small baking dish. Cover completely with sliced cheddar. Sprinkle breadcrumbs on top. Broil in your oven until the cheese is completely melted and just starting to brown -- around five minutes.Can you eat 2 year old frozen cheese? ›
Frozen Hard Cheeses
When freezing hard cheeses like manchego, parmesan, or cheddar, these can last a long time. If frozen properly, they can last up to 2 years in the freeze. It is best to eat within 6-9 months for the ultimate freshness.
Yes, you can freeze eggs. Eggs can be frozen for up to a year, although it is recommended to use them within 4 months for freshness. Many people find themselves being left with spare egg whites or yolks after a recipe requiring just one or the other, or even throwing out unused eggs when the box hits its expiry date.What cheese does not need refrigerated? ›
Soft cheeses such as cream cheese, cottage cheese, shredded cheeses, and goat cheese must be refrigerated for safety. As a general rule, hard cheeses such as cheddar, processed cheeses (American), and both block and grated Parmesan do not require refrigeration for safety, but they will last longer if kept refrigerated.Why is pasta not suitable for freezing? ›
Can you freeze pasta without affecting its taste and texture? Unfortunately, plain frozen pasta typically turns mushy and tasteless when defrosted. However, baked pasta dishes, like lasagna and baked ziti, fare better when baked and frozen.Can you freeze pasta with sauce and cheese? ›
If you've already combined your pasta leftovers with sauce, feel free to freeze them together, ideally in an oven- or microwave-safe dish for easy heating later on. If you haven't combined them, freeze the pasta and sauce separately.Why can't you freeze fresh pasta? ›
To freeze fresh pasta, the key is to keep it from sticking together in the freezer. Although pasta doesn't have a huge moisture content, there is enough there to make it go sticky if not frozen properly. First, lightly toss your pasta in a few tablespoons of fresh flour. The flour will help absorb any extra moisture.
- Broccoli + Shredded Chicken. ...
- Bacon + Peas + Egg. ...
- Garlic + Pickled Jalapeños. ...
- Mushrooms + Thyme + Grated Gruyère. ...
- Pesto + Sun-Dried Tomatoes. ...
- Kimchi + Bacon + Chopped Scallions. ...
- Cherry Tomatoes + Basil + Mozzarella.
- Add extra cheese to your dish.
- Mix in some hot sauce and chicken to make buffalo chicken mac n' cheese.
- Add in vegetables like broccoli, cauliflower and spinach.
- Sprinkle some bacon bits or breadcrumbs on the top of your dish.
- Add spices and fresh herbs to your dish.
For some reason, mixing the butter, milk and cheese powder in with shaped pasta yields a slightly thicker and glossier sauce that sticks to the noodles better than the original variety.Is it okay to eat mac and cheese after the expiration date? ›
You don't need to worry about getting sick if you eat expired Kraft Mac and Cheese. It won't harm you if you eat expired mac and cheese that still looks okay – no molds, smells good, and tastes delectable. But if there are visible signs of spoilage, throw it away and do not consume it.Can you freeze Costco mashed potatoes? ›
No matter what kind of mash you go for – homemade, store-bought, instant, or for babies – it can all be frozen and saved for later as long as there is enough FAT, such as butter and milk, or cream.Why is my mac and cheese grainy when reheated? ›
A: "Your ratios—from your roux to the fat content in the cheeses that you're using—may be a little off," Rach says. "You also just may be overcooking it."Can I reheat mac and cheese that was left out overnight? ›
No. It is not advisable to consume mac and cheese that's been left out overnight. Cooked mac and cheese should not be left out for more than two hours, according to the United States Department of Agriculture (USDA).Can mac and cheese be made ahead and reheated? ›
One of the benefits of mac and cheese is that you can make it ahead, refrigerate it in a covered baking dish, and bake it a few days later. Just bring it to room temperature before putting it in the oven.What cheese is best for mac n cheese? ›
An overview of Food Network's mac and cheese roundup reveals that most recipes have one type of cheese in common: sharp Cheddar. Sharp Cheddar —especially the inexpensive, mass-market block you can buy at the supermarket —strikes just the right balance between meltability and flavor. Consider it your base cheese.Is it better to boil macaroni in milk or water? ›
The use of milk makes the pasta itself creamier, and reserving it keeps any starch washed off the pasta in the milk, which is then used to make the sauce. Some milk is absorbed into the pasta as it cooks, but you need to reserve enough to make your sauce.
Season your water with a bit of salt. It tastes better. While it's true that salt water boils at a higher temperature, you're not using enough salt to make a difference here. Bring your water to a true boil before adding your pasta.What casseroles do not freeze well? ›
Allrecipes explains that casseroles that contain dairy, particularly soft cheeses like ricotta, don't freeze very well. Ricotta contains so much moisture that as it reheats, it can steam your casserole and make ingredients mushy. And dairy, in general, can get a bit grainy if it's frozen, then reheated.Can you freeze casseroles in aluminum pans? ›
Foil pans work well for freezing foods you'll re-heat in the oven. You can bake food in foil pans and then freeze it in the baking pan. Cover pan tightly with freezer-quality foil, paper, plastic wrap or a plastic bag.
Freezing a casserole in glass is just fine, as long as you are using a freezer-safe dish. Some glass isn't rated for freezer storage, so check the bottom of the dish before getting started. Then, follow these steps: Cover the top of the casserole with a layer of plastic wrap.Why add egg to mac and cheese? ›
The egg will make the Mac and Cheese smoother and creamier. I have tried this recipe with and without adding the egg and it does affect the texture of the final recipe. In a medium bowl, beat one egg. Warm the egg by drizzling in, very slowly, 2-3 Tablespoons of the thickened milk mixture.What's the best pasta for mac and cheese? ›
By definition, classic macaroni and cheese should be made with, well, macaroni, a style broadly defined as any short, cylindrical extruded pasta. This includes tubes like ziti, penne, rigatoni and, yes, elbows, as well as corkscrew shapes like fusilli.How do you make frozen mac and cheese taste better? ›
Brown the mac and cheese under the broiler for a couple of minutes and voila, amped up mac and cheese. Adding fresh vegetables, herbs, and seasonings helps tailor frozen dinners to your own personal taste and make bland freezer meals taste a little more homemade.How do you store and reheat mac and cheese? ›
You probably stored your mac and cheese leftovers in the baking dish they were made in, covered tightly with a layer of tinfoil. If so, all you need to do is preheat your oven to 350 degrees Fahrenheit, put the dish in, and reheat until hot and bubbly, about 20 minutes.Can you save and reheat mac and cheese? ›
Reheat in the Microwave
Store leftovers right. Zentner likes to keep leftover foods in glass containers with lids. This is particularly convenient since it allows you to reheat right in the container. Add one tablespoon of milk per cup of macaroni and cheese.
Add 1 tablespoon of milk per cup of mac and cheese and mix to incorprate as much as possible. *If you'd like to add more creaminess and flavor, substitute half-and-half or cream.
Spices: A little garlic powder and onion powder goes a long way in making this the best easy mac and cheese ever! Definitely don't skimp on these. You could also add a bit of paprika, black pepper, or even a splash of hot sauce if you want to amp up the flavor even more.How do you keep mac and cheese from getting mushy? ›
Undercook your pasta—cook one minute less than the package directions to avoid a mushy mac and cheese. Swap rich cream for all or half of the milk in the recipe. Cook your pasta in salted water.Why is my baked mac and cheese dry? ›
Use less thickener
You want equal amounts of butter and flour by weight. This is key. Throw in too much flour, and sure the sauce might get thick, but it also might taste floury and be lumpy. Even if you get the roux right, use too much or reduce your sauce down too far, and the macaroni and cheese will turn out dry.
How to Reheat Mac and Cheese Without It Separating? To prevent mac and cheese from separating, just add a bit of milk or cream when reheating. This helps to keep the cheese sauce smooth and creamy. Start by adding a small amount of milk or cream, and then gradually add more as needed.How long can mac and cheese sit out? ›
Like all other food, mac and cheese can only sit out at room temperature for two hours before entering the “danger zone.” If temperatures are high, above 90 °F, mac and cheese should not be left out for longer than one hour.What is the best way to reheat mashed potatoes? ›
So, what is the best way to reheat mashed potatoes? The best way to reheat mashed potatoes is to heat them covered in the oven at 350 degrees with extra milk and butter. Cook for 20 minutes or until warmed through. Don't worry if you don't have the time or means to heat your leftover potatoes in the oven.