PREPARE and bake Basic Meatballs as directed.
MEANWHILE, heat oil in large deep skillet on medium heat. Add mushrooms, onions and garlic; cook 10 min., stirring frequently. While vegetables are cooking, cook noodles as directed on package.
ADD flour to vegetable mixture; cook and stir 1 min. Add remaining ingredients; mix well. Bring just to boil; simmer on medium-low heat 4 min., stirring frequently.
DRAIN noodles. Add meatballs to sauce; stir to evenly coat. Serve over noodles.