To learn not just eat:
Adding cheese to hamburgers became popular in the late-1920s to mid-1930s, and there are several competing claims as to who created the first cheeseburger. Lionel Sternberger is reputed to have invented the cheeseburger in 1926 at the age of 16 when he was working as a fry cook at his father's Pasadena, California sandwich shop, "The Rite Spot," and "experimentally dropped a slab of American cheese on a sizzling hamburger."
An early example of the cheeseburger appearing on a menu is a 1928 menu for the Los Angeles restaurant O'Dell's which listed a cheeseburger smothered with chili for 25 cents.
Other restaurants say they invented the cheeseburger. For example, Kaelin's Restaurant in Louisville, Kentucky, says it invented the cheeseburger in 1934. One year later, a trademark for the name "cheeseburger" was awarded to Louis Ballast of the Humpty Dumpty Drive-In in Denver, Colorado. According to Steak 'n Shake archives, the restaurant's founder, Gus Belt, applied for a trademark on the word in the 1930s.[
The recipe:
Cook the burgers using the regular hamburger recipe and place one THIN slice of American cheese on the crown side before adding meat patty. Don't use Kraft singles or Velveeta. (or anything termed as "American processed cheese FOOD) Use only real American cheese. That is KEY!
Please Note: Most slices of American cheese are too big for McDonald’s cheeseburgers. So take about 1/4" off two edges to make a smaller square.
Here is the regular hamburger recipe ( It isnt so long to read as it seems, aprox 3 mins :D )