Reheat a Casserole

How do you reheat a casserole?

There are few things about a casserole that are present in only a few other foods: they are delicious, they are the perfect comfort food, they can be fed to a large crowd without any extra effort, they are great for making ahead of time, and they reheat very well.

So whether you are planning to make a large batch at a time so you can save some for the future, or you have ended up with some leftovers, here are some simple ways you can use to reheat a casserole.

How to Store a Casserole?

Whether you have an entire dish of casserole or a small serving, just cover it with a layer of plastic wrap or aluminum foil to store them for future use. Remember that air is an enemy of your cooked casserole, so make you wrap it as airtight as possible.

  • Stored properly, it will last in the fridge for up to two days.
  • Although a casserole will stay safe to eat indefinitely in the freezer if consistently kept at 0 degrees, the taste and quality will start to deter after 3 months.

How to Reheat a Casserole?

The best way to reheat a casserole is dependent on whether you’re reheating a single serving or an entire casserole. Here are the best ways to go for either:

Reheat Single Potions Casserole


If you are reheating a single potion, microwave is the best way to go.

  • Put the potion of casserole in a microwave-safe plate or bowl.
  • Loosely cover with another microwave safe plate or lid.
  • Put the dish in the microwave for one minute.
  • Check after one minute and then after every thirty second interval until the casserole is thoroughly heated.
  • The time it will take to reheat will depend of the density of the casserole as well as the size of the serving. But generally, a minute and a half to two minutes will be enough.
  • Remove from the microwave and serve.
  • Make sure it isn’t too hot before you consume it to prevent burning your tongue.

Reheating Whole Casseroles or Large Servings

If you have an entire casserole, you will have to prepare it for reheating ahead of time.

  • If refrigerated, take out the casserole about 30 minutes to half an hour before reheating it.
  • If frozen, take it out of the freezer and place it in the fridge at least 12 hours before you plan on reheating it.


This is the best way to reheat a large serving of casserole. But always remember to bring the casserole to room temperature so the texture doesn’t spoil in the oven. This will also reduce the time it will take in the oven, and heat the whole dish more evenly.

  • Preheat the oven at 325 degrees to 350 degrees Fahrenheit, depending on the size of your casserole.
  • Cover the casserole with a lid or a large tinfoil to avoid loss of moisture.
  • Place the dish in the oven.
  • After about 15 to 20 minutes, check on the casserole and remove the cover. Give extra time if you have a larger casserole.
  • Heat it for an additional 5 to 10 minutes.
  • Remove from the oven and serve.

* If you have a food thermometer, check that the casserole has an internal temperature of 165 degree Fahrenheit.

It is as simple as that. Enjoy you leftover casserole or make them ahead of time with these simpe ways of reheating them.