1 lb. lean ground beef
4 KRAFT Singles, cut into quarters
1 small red onion, sliced
4 hamburger buns, toasted
1 plum tomato, thinly sliced
4 lettuce leaves
HEAT grill to medium-high heat.
SHAPE meat into 8 (1/4-inch thick) patties. Top each of 4 patties with 4 Singles pieces; cover with remaining patties. Pinch edges together to seal.
GRILL burgers and onions 6 to 7 min. on each side or until burgers are done (160ºF) and onions are tender.
FILL buns with burgers, onions and remaining ingredients.
To prevent the onion slices from separating onto rings when grilling them, thread slices onto 2 parallel skewers before grilling as directed.
It's best to let these delicious burgers stand 3 to 4 min. before sinking your teeth into them.
Nutrition Information Per Serving: 380 calories, 16g total fat, 7g saturated fat, 90mg cholesterol, 550mg sodium, 26g carbohydrate, 2g dietary fiber, 6g sugars, 30g protein, 25%DV vitamin A, 8%DV vitamin C, 35%DV calcium, 25%DV iron.