Parmesan Pork Medallions

Cut pork into 4 slices; flatten to 1/4-in. thickness. In a large shallow dish, combine the bread crumbs, cheese, salt and pepper. Add pork, 1 slice at a time, and turn to coat. , In a large skillet over medium heat, cook pork in oil until meat is no longer pink, 2-3 minutes on each side. Remove and keep warm. , Add onion to the pan; cook and stir until tender. Add garlic, cook 1 minute longer. Serve with pork.