Trim the ligament and fat from the round steak. Place double layer of aluminum foil in bottom of shallow baking pan (9x15x2 or thereabouts in size). Place meat on foil. Spread unmelted butter or margarine on top of meat, season with garlic powder, pepper and half of Worcestershire sauce or powder. Pile vegetables on top. Top with remaining Worcestershire. Cover with 2 additional layers of foil, wrap tightly to keep steam and juices inside. Bake 2.5 hours in 180ºC oven.