HEAT oven to 375ºF.
COMBINE meat, rice and half the cheese mixture; shape into 12 balls, using about 1/3 cup for each. Place in 13x9-inch baking dish sprayed with cooking spray.
BAKE 25 min.
COVER with spaghetti sauce and remaining cheese mixture. Bake 10 min. or until meatballs are done (160ºF). Sprinkle with parsley.