Burgers with Grilled Onions

Directions:

1. Preheat grill to medium heat.
2. Lightly shape Ground Beef into four 3/4-inch thick patties. Brush onion slices with oil.
3. Shape into four 3/4-inch thick patties.
4. Place patties and onion slices on grid. Grill, covered, 13 to 14 minutes until instant-read thermometer inserted horizontally into center registers 160°F, turning occasionally.
5. Grill onions, 10 to 12 minutes or until tender, brushing with oil and turning occasionally.
6. Season burgers and onions with salt and pepper as desired.
7. Line bottom of each bun with lettuce. Place burgers on top of lettuce. Top with tomatoes and grilled onions. Close bun.