Meanwhile, in 10-inch nonstick skillet, cook beef over medium heat 8 to 10 minutes, stirring occasionally, until brown; drain. Stir in Worcestershire sauce and seasoned salt. Use serrated knife to cut deep V-shape in top of French loaf. Remove V-shape piece of bread. Hollow out center of loaf with spoon. Spoon beef mixture into hollowed-out French loaf. Top with cheese pieces. Bake 3 to 5 minutes longer to melt cheese.