Original sentence: A 'casserole' is a shallow, open, cooking vessel, designed primarily for use in the oven.Casseroles are typically made of ceramic, but can also be made of glass or metal.Casseroles may be round or square, and typically have sides perpendicular to their bottoms.Casseroles resemble baking pans or dutch ovens, and can sometimes be used interchangeably with these other vessels.They may or may not have lids