How Do You Freeze Cooked Pasta Casserole?
To freeze cooked pasta casserole, allow it to cool down completely in the baking dish. Cover the dish with a layer of plastic wrap followed by a layer of aluminum foil. Label and date the package before placing it in the freezer. When you are ready to reheat the casserole, remove the aluminum foil and plastic wrap, and cover the baking dish with foil. Bake the frozen casserole in a preheated oven until it is heated through.