HEAT grill to medium heat. Mix meat and 2 Tbsp. dressing; shape into 8 thin patties. Combine remaining dressing and bacon. Spoon onto centers of 4 patties; top with Singles quarters and remaining patties. Pinch edges together to seal.

GRILL 7 to 9 min. on each side or until burgers are done (160°F).

FILL buns with lettuce, burgers and tomatoes.