A casserole is a dish that combines several ingredients, usually including meat, vegetables, and a starchy component like pasta or rice, all mixed together and baked in the oven in a single pan. The word also refers to the deep baking dish itself.

Casseroles are popular because they're efficient: you can prepare everything in one dish, pop it in the oven, and come back later to a complete meal. A classic example is tuna noodle casserole, which combines canned tuna, cooked noodles, cream sauce, and often peas, topped with breadcrumbs or crushed potato chips. Other favorites include green bean casserole (often served at Thanksgiving) and chicken and rice casserole.

The beauty of a casserole is that ingredients cook together, allowing flavors to blend. The top often gets golden and slightly crispy while the inside stays moist. Families frequently bring casseroles to potlucks or to neighbors who need a helping hand, since they're easy to transport, reheat well, and can feed several people. Many casserole recipes have been passed down through generations, becoming treasured family traditions. While some people joke about strange casserole combinations from old cookbooks, a well-made casserole can be comforting, practical, and delicious.