Mix 1 cup salsa and beef thoroughly in a large bowl (if using ground turkey, use 3/4 cup salsa). Shape mixture firmly into 6 patties.
Cook patties in a 12-inch skillet or grill pan over medium-high heat for 10 minutes or until well browned on both sides and cooked through.
Serve burgers on rolls with remaining salsa. Tip: Top each burger with 1 slice Monterey Jack or Cheddar cheese during the last 3 minutes of cooking. Top with sliced avocado, tomato and lettuce.