Cheeseburger is a natural evolution of the beloved hamburger, the only difference between the two being that the cheeseburger has a slice of cheese added on top of the meat patty. Although American cheese was the original choice, Swiss, Cheddar, and numerous blue cheeses were all used later to make this mouth-watering sandwich.
As with most dishes that are extremely popular, the history of the cheeseburger is somewhat complicated. Adding cheese to hamburgers didn't become popular until the mid-1920s, and there are numerous claims as to who invented the first cheeseburger.
Other places also claimed that they invented the cheeseburger, such as Kaelin's Restaurant from Louisville, Kentucky, saying they first made it in 1934. However, the trademark for the name was given to Louis Ballast of the Humpty Dumpty Drive-In in Denver, Colorado in 1935.