Our pewter Casserole Holders and Casseroles are great! The casserole holders fit a 13"x9" Pyrex brand glass casserole #233 or an 8"x8" #222. Our casseroles can be cooked in! Spray the casseroles with cooking spray, put your food in and bake for up to an hour in a 350 degree oven! After serving, remove your food and hand wash with mild soap and water then towel dry. It is not recommended to store food in any pewter container, it may cause staining.