Easy French Onion Meatballs These Easy French Onion Meatballs are rich, cozy, and full of that classic French onion flavor everyone loves. Juicy meatballs simmer in a savory onion gravy and get topped with melty cheese for an easy comfort-food dinner that works just as well over mashed potatoes as it does with crusty bread. Ingredients 1 bag (20–24 oz) frozen fully cooked meatballs 2 tablespoons butter 2 medium onions, thinly sliced 2 cups beef broth 1 packet onion soup mix 1 tablespoon Worceste