1. Fire up the grill to high heat and lightly oil the grill. 

2. Once the grill is preheated, cook burgers until nearly done, you should not see any pink. Once nearly done, top burgers with cheese slices. Let the cheese melt before removing the burgers from the grill.

3. On the bottom half of a bun spread a thin layer of ketchup (if desired). Top with iceberg lettuce, and tomato, followed by the grilled burger and the other half of the bun. Serve and enjoy!