Meanwhile, in large bowl, combine ground beef, bread crumbs, egg, tomato sauce, onion, garlic, basil, salt and pepper; mix well. Place meat mixture onto sheet of plastic wrap and spread into a 14 x 10 inch rectangle. Arrange prosciutto over meat leaving 1-inch border. Top with cheese and prepared filling. Using plastic wrap to help, roll up meat from short end. Pinch edges and ends to seal in Filling.