Tuna noodle casserole is a comforting dish made primarily from canned tuna, egg noodles, and a creamy sauce. It often includes ingredients like peas, mushrooms, and cheddar cheese, which add flavor and texture. The dish is typically baked in the oven until bubbly and golden on top. This casserole is popular for its simplicity and convenience, as it uses pantry staples and can be prepared quickly. It is a common choice for family meals and potlucks, providing a hearty option that can serve several people.