HEAT oven to 400°F.
COMBINE tomatoes, stuffing mix and garlic just until stuffing mix is moistened.
PLACE 1 chicken breast on centre of each of 4 large sheets of heavy-duty foil sprayed with cooking spray; top with basil, stuffing mixture and cheese. Bring up foil sides; double fold top and ends to seal each packet, leaving room for heat circulation inside. Place in 15x10x3/4-inch pan.
BAKE 30 to 35 min. or until chicken is done (170ºF). Cool 5 min. Cut slits in foil to release steam before opening packets.
