FOR each serving: Grill 1 beef patty on medium-high heat 2 to 3 min. on each side or to medium (160ºF), or desired doneness. Top with 1 cheese slice. Grill 30 sec. or until cheese begins to melt.
SPREAD 1/2 Tbsp. of the steak sauce onto bottom half of bun; top with cheeseburger, rounded 1/2 cup combined vegetables and 1 Tbsp. of the remaining steak sauce. Cover with top of roll.