Prep Time:
10 min
Total Time:
30 min
8 servings, one cheeseburger each
2 Tbsp. olive oil
3   onions, thinly sliced, separated into rings
8 hamburger patties (1/4 lb. each)
3 Tbsp.  A.1. Original Steak Sauce
2 tomatoes, sliced
8   hamburger buns, partially split
8 KRAFT Singles

PREHEAT grill to medium heat. Meanwhile, heat oil in large nonstick skillet on medium-high heat. Add onions; cook 5 min., stirring frequently. Cover with lid. Simmer 20 min. or until onions are golden brown, stirring frequently.

MEANWHILE, grill patties 5 min. on each side or until medium doneness (160ºF). Stir steak sauce into onion mixture.

PLACE 1 tomato slice and burger on bottom half of each bun; cover with 1 Singles, 3 Tbsp. of the onion mixture and top of bun.