HEAT oven to 375°F.
MIX meat and coating mix just until blended; shape into 12 (1-1/2-inch) meatballs. Place in 13x9-inch baking dish sprayed with cooking spray. Top with spaghetti sauce; cover.
BAKE 20 to 25 min. or until meatballs are done (160°F). Meanwhile, cook spaghetti as directed on package, omitting salt.
DRAIN spaghetti. Serve topped with meatballs, sauce and cheese.