Stuffed shells are a popular Italian-American dish made from large pasta shells filled with a mixture of cheese, typically ricotta, mozzarella, and Parmesan. The filled shells are often baked in a rich tomato sauce, which adds flavor and moisture to the dish. This comforting meal is usually topped with more cheese before being placed in the oven, resulting in a bubbly, golden crust. Stuffed shells can be customized with various ingredients, such as spinach, ground meat, or herbs, making them versatile and appealing to many tastes.