In large bowl, combine meat, crumbs, parsley, garlic and milk; mix well using hands. Form into 24 meatballs. Place in large skillet sprayed with butter-flavor cooking spray. Brown lightly on all sides; remove from skillet and cover to keep warm.
In same skillet, sauté onion for 5 minutes or until tender. Stir in mushroom, gravy and sour cream. return meatballs to skillet. Lower heat, cover and simmer 5 minutes or until mixture is heated through.
For each serving, place 1/2 cup noodles on plate and spoon about 3/4 cup meatballs in sauce over noodles.
Servings: 4