Saute onion in butter in ... tender. Add ground beef, cook until brown, stirring ... sauce, half of Provolone, and half of sour ... longer. Yield: 10-12 servings.
Heat oil in saucepan over ... minutes. Add ground beef; cook 5 minutes or ... of Ricotta and Provolone/Mozzarella cheese (mix one egg ... until bubbly.) Serves 6.