HEAT oven to 350°F.
CUT thin slice off top of each pepper; reserve tops. Remove and discard seeds from peppers.
COMBINE remaining ingredients; spoon into peppers. Cover with pepper tops. Place in 9-inch square baking dish. Spoon any remaining filling around peppers.
BAKE 1 hour to 1 hour 10 min. or until peppers are tender and filling is heated through.