casserole /ˈkæs.əˌɹoʊl/noun 3verb 1forms 3 noun3 •A dish of glass or earthenware, with a lid, in which food is baked and sometimes served. •Food, such as a stew, cooked in such a dish. •Any type of food that fills the high-walled dish or pan in which it was cooked. verb1 •To cook like, or as, a casserole; to stew. formscasseroled · casseroling · casseroles