Question: can tuna noodle casserole be frozen?
Answer: Leftover Tuna Technique Leftover, oven-baked tuna casserole can also be frozen. ... Cover the untouched portion of the casserole with aluminum foil, and freeze it in the baking pan for several hours. Once it is solid, remove the casserole from the pan, place it in a freezer bag, and return it to the freezer.