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The Best Guide for How to Reheat a Sandwich!

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Sandwiches are the indispensable snack we all love to have between meals, or even for lunch. And no matter how delicious and enjoyable they are, there is always the potential of some leftovers which, unfortunately, are not the best when eaten cold the next day. So you really don’t have many options. You can either munch on all the sandwiches you have so that nothing remains, eat them the next day cold and flavorless, or you can just learn all the best ways on “How to reheat a sandwich” and enjoy every bite exactly like the fresh one.

I am going to lay out all the possible ways of reheating your sandwiches. Choose whatever works better for you. Trust me, you won’t have to eat any stale or cold sandwiches again.

How to reheat a sandwich in the oven?

This is considered the best way of actually reheating your sandwich, especially when you are using the aluminum foil method which guarantees equal heating of the whole sandwich while also retaining its moisture so that it doesn’t dry out in the oven. Not to mention the fact that the oven generally gives a crispy on the outside and soft on the inside kick to the sandwich.

But of course, it’s not as perfect for some people as it is to me, and I don’t really blame them. Waiting for the oven to preheat and carrying out all these steps just to reheat a sandwich isn’t exactly tempting. So really, it depends on your patience.


  1. Spread a large piece of aluminum foil on the counter. Place your sandwich on top of the foil, then start wrapping the foil around the sandwich, making sure it’s all covered.
  2. Transfer the wrapped sandwich to a preheated oven at 325 degrees to heat for 15-20 minutes.
  3. Check the sandwich after 20 minutes by removing part of the foil. If it’s still not heated enough, transfer it back for an extra three minutes.
  4. When it’s perfectly heated, remove the foil and enjoy!

An extra advantage that the oven method can provide is the possibility of reheating a frozen sandwich. Generally speaking, it’s better to let any frozen sandwich thaw first in the fridge overnight, or at least for a few hours before transferring it to the oven. However, you can also place a fresh out of the freezer sandwich directly in the oven. It should take an extra 5-10 minutes to be fully heated though.

How to reheat a sandwich in the microwave?

This method of reheating your sandwich is perfect when you are in a hurry and don’t really have much time to preheat your oven or wait for the sandwich to be perfectly done. It doesn’t require more than covering your sandwich with a paper towel and popping it in the microwave for 90 seconds. And the reason we put a paper towel instead of a plastic one is the fact that paper towels will soak the moist released making the sandwich crispy and delicious.

Now not all the sandwiches come out perfectly when left in the microwave for 90 seconds. Some of them are still cold even after the passage of that time. But don’t worry, they are still salvageable. All you got to do is:


  1. Slice your sandwich open by separating the first layer of the bun with half the filling, from the other layer with the rest of the filling.
  2. Place each half in the microwave for 15-20 seconds.
  3. Reassemble the two halves of the sandwich back into one and enjoy the freshly reheated heavenly sandwich.

How to reheat a sandwich in the air fryer?

You must know by now how much I love Air fryers. I use it in absolutely any and everything. I mean, if you haven’t tried it yet, now is your chance!
The cool thing about using the Air fryer for reheating the sandwich is the fact that it is so quick and easy like the microwave method, yet it doesn’t alter the quality or the taste of the sandwich at all. Quite the opposite actually, it gives an extra crispy and fresh kick to the sandwich.


  1. Place your sandwich in the Air fryer basket after removing the upper layer of the sandwich.
  2. Adjust the heating settings to medium after transferring the basket to the Air fryer. Let the sandwich heat for a few minutes.
  3. Using a butter knife, stab the sandwich from the center and pull the knife out to check whether it’s sufficiently heated or not.
  4. When it’s perfectly heated, remove the sandwich and replace it with the upper layer for only 30 seconds.
  5. Assemble your sandwich and enjoy its heavenly, crispy flavor!

How to reheat a sandwich in the toaster oven?

The toaster oven is the mini version of the regular oven, meaning it gives the same results as the oven but with less time needed to do so. This also means that you can reheat the frozen sandwich here as well.
We will also have to use aluminum foil, same as the oven method, as a way to ensure retaining some of the moisture in the sandwich.


  1. Wrap the sandwich in an aluminum sheet tightly.
  2. Place the wrapped sandwich on a baking tray.
  3. Transfer the tray to a preheated oven at 350 degrees.
  4. Set the time to five minutes to heat on one side first, then Flip it on the other side for another 5 minutes.
  5. Enjoy it while it’s still hot.

Frequently asked questions:

How to avoid the drying out of the sandwich when it’s being reheated?

Always go with the aluminum foil, like the one we used in the oven and the toaster oven methods. Aluminum foil heats up well when placed in the oven so it always the heat to reach the sandwich as well, while at the same time it keeps the moisture from leaving the sandwich and drying it out.

Can I Reheat A Sandwich With Mayonnaise In The Oven?

Usually, it is not safe to reheat mayonnaise twice, while just once is usually accepted. That’s why reheating a sandwich garnished with mayonnaise can be done using the oven only if it’s the first time doing though.

Can I microwave the sandwich?

Of course, and we already did so before. You need to wrap up a paper tower though to prevent it from soaking up too much moisture and become mushy instead of crispy.

Can any sandwich be reheated twice?

Generally speaking, reheating food shouldn’t be done more than once. Whether you decided to freeze it after reheating it once or not, you shouldn’t go for a second attempt. Only once and whatever is left should be discarded, and that is because every time you heat any type of food you allow bacteria to grow, making you more prone to any food-borne illnesses.

That’s why always reheat the minimum amount of food to guarantee finishing every piece of it instead of having to throw it away.


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