Meatballs in Gravy

Name: Meatballs in Gravy
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 1 large egg; 1/2 cup 2% milk; 1 tablespoon cornstarch; Salt and pepper to taste; 1 medium onion, finely chopped; 1 teaspoon salt; Dash pepper; 1/4 teaspoon ground nutmeg; 1/4 teaspoon ground allspice; 1/4 teaspoon ground ginger; 1-1/2 pounds lean ground beef (90% lean); 3 to 4 tablespoons butter; 1 tablespoon butter; 2 tablespoons all-purpose flour; 1 cup beef broth; 1/2 cup whole milk or half-and-half cream; Minced fresh parsley, optional; Hot cooked noodles, optional