Cook beef and onion in a large skillet coated with cooking spray until beef crumbles and is no longer pink. Remove beef mixture from skillet, and drain well; wipe skillet with a paper towel.
Add pasta sauce and next 3 ingredients to skillet; cook over low heat 5 minutes or until thoroughly heated. Stir in beef mixture. Sprinkle with Parmesan cheese. Serve warm with baked tortilla chips, carrots, or celery sticks.
