Directions

1. 1
   Form the ground beef into patties and season with salt, pepper, and Worcestershire sauce.
2. 2
   Heat olive oil in a skillet and cook the onions until caramelized.
3. 3
   Grill the beef patties for about 4-5 minutes on each side, adding cheese on top during the last minute to melt.
4. 4
   Toast the burger buns on the grill.
5. 5
   Assemble the burger with lettuce, tomato, beef patty, and caramelized onions.
6. 6
   Serve hot.