Bold 'n' Saucy Cheeseburger
1 lb. extra lean ground beef
1/4 cup A.1. Bold & Spicy Steak Sauce, divided
4 slices red onion
4 KRAFT 2% Milk Singles
4 whole wheat hamburger buns, split
4 slices tomato
PREHEAT grill to medium-high heat. Mix meat and 2 Tbsp. of the steak sauce in medium bowl. Shape into 4 (1/2-inch-thick) patties. Spray both sides of onion slices with cooking spray and set aside.
GRILL patties 4 min. on each side or until cooked through, adding onions to the grill after 2 min. and cooking until crisp-tender. Top the burgers with the 2% Milk Singles and continue grilling until the 2% Milk Singles are melted.
PLACE burgers on bottom halves of buns. Top evenly with remaining 2 Tbsp. steak sauce. Cover with onions, tomatoes and top halves of buns.