Cabbage casserole is a comforting and filling dish that can be made with a variety of ingredients. One recipe involves layering sliced cabbage with ground beef, rice, and tomato sauce, then baking it in the oven until bubbly and golden. Another variation uses a vegetarian filling of lentils, mushrooms, and cheese. Cabbage casserole is a great way to use up leftover ingredients and can be served as a main dish or as a side.