What Casseroles Can Be Frozen?
Most casseroles can be frozen, including those made with meat, pasta, rice, and vegetables. However, casseroles with mayonnaise, cream, or sour cream will not freeze well and may become separated or watery when reheated. It is important to let casseroles cool completely before freezing them, and then cover them tightly with plastic wrap or aluminum foil. It is also recommended to label and date the casserole before placing it in the freezer.