Lasagna is a type of pasta, possibly one of the oldest types, made of very wide, flat sheets. Either term can also refer to an Italian dish made of stacked layers of lasagna alternating with fillings such as ragù, béchamel sauce, vegetables, cheeses, and seasonings and spices.
In other regions, lasagna can be made with various combinations of ricotta or mozzarella cheese, tomato sauce, meats (such as ground beef, pork or chicken), and vegetables (such as spinach, zucchini, olives, mushrooms), and the dish is typically flavoured with wine, garlic, onion, and oregano.