1. In a large skillet, cook beef over medium heat until no longer pink; drain. Stir in the ketchup, brown sugar, mustard and Worcestershire sauce. Remove from the heat; set aside.
2. Press each biscuit onto the bottom and up the sides of a greased muffin cup. Spoon beef mixture into cups; top with cheese cubes. Bake at 400° for 14-16 minutes or until golden brown. Yield: 5 servings.