1. Cook the beef and onion in a 10-in. skillet over medium-high heat until the beef is well browned, stirring to separate meat. Pour off any fat.
2. Stir the soup, ketchup and Worcestershire in the skillet. Spoon the beef mixture into a 2-qt. shallow baking dish. Arrange the potatoes around the inside edge of the baking dish.
3. Bake at 425°F for 25 min. or until the potatoes are golden brown.