If you are a budget-conscious cook, chances are pretty good that you will make larger casseroles and your family can have her one dinner, so you can have it for leftovers the next night or for lunches. But how long are casseroles safely able to be stored in the refrigerator before they might start having food safety issues?
A good rule of thumb is the casseroles can be stored in the refrigerator for three to four days. Obviously, there will be some variations of this depending on the ingredients. For example if it is a chicken pot pie that you’ve made, because of the crust might not last more than a day or two in the refrigerator. But something like a macaroni and cheese casserole with easily last multiple days.
If you have a casserole in your fridge that isn’t getting used up as quickly as you thought it might you can always go ahead and freeze the casserole in individual servings, so you’ll have an easy quick lunch or dinner to pull out of the freezer and reheat on a moment’s notice.