Tuna bake is a delicious recipe that is made using tuna, milk, condensed cream of mushroom soup, green pepper, butter, all-purpose flour, shredded cheddar cheese and baking mix. It may either be served as a side dish or as the main dish. Some popular Tuna bake recipes include Annette Sym Creamy Tuna Bake, Australian Tuna Bake and Bake Tuna Noodle Casserole Midwest.