<human>:  What is the most popular recipe for macaroni and cheese?
<bot>: The most popular recipe for macaroni and cheese is the classic baked version. It consists of macaroni pasta, butter or margarine, salt and pepper, milk, and of course cheese. The cheese is usually a combination of cheddar, Monterey Jack and mozzarella. The cheese is mixed with the pasta and then combined with a creamy sauce made from the butter, flour, milk, salt, and pepper. The mixture is then poured into a baking dish and baked until golden brown and bubbly.