Heat oven to 375°F. Spray 13x9-inch (3-quart) glass baking dish with nonstick cooking spray.
Place meatballs in large microwave-safe bowl. Microwave on MEDIUM for 3 to 5 minutes or until meatballs are thawed.
Prepare biscuit mix according to package; place in large bowl with meatballs. Add pasta sauce; toss to coat. Spoon and spread mixture in sprayed baking dish.
Bake at 375°F. for 30 to 40 minutes or until edges are deep golden brown and biscuit pieces are no longer doughy. Sprinkle with cheese; bake an additional 2 to 5 minutes or until cheese is melted. Let stand 10 minutes before serving.