A cheeseburger is a burger with cheese on top. The piece of cheese is traditionally placed on top of the meat patty. Shortly before serving, the cheese is frequently added to the cooked hamburger patty, allowing the cheese to melt. Cheeseburgers come in a variety of shapes, sizes, flavors, and compositions. A cheeseburger, like other hamburgers, can be topped with lettuce, tomato, onion, pickles, bacon, mayonnaise, ketchup, and mustard.
In fast-food restaurants, processed cheese is commonly used in cheeseburgers. Other meltable cheeses could be substituted. Cheddar, Swiss, mozzarella, blue cheese, and pepper jack are all common examples.
The ingredients used to make cheeseburgers are comparable to those used in regional hamburger varieties, however, most start with ground beef. American, Swiss, and other meltable cheeses are commonly used as toppings. Lettuce, tomato, onion, pickles, bacon, avocado or guacamole, sliced sautéed mushrooms, cheese sauce, or chili are popular toppings, but the possibilities are endless.
With cheese and meat interleaved, a cheeseburger can have more than one patty or more than one slice of cheese—typical, it’s but not always the case, for the quantity to grow at the same rate. A stack of two or more patties follows the same fundamental pattern as hamburgers: a double cheeseburger has two patties, a triple cheeseburger has three, and a quadruple cheeseburger has four. A score burger is a burger with 20 patties.
Cheeseburgers are sometimes made with the cheese inside the ground meat rather than on top. A Jucy Lucy is another name for this.