Galley Potatoes

Make several slits into potatoes width-wise, about ¾ of the way through the potato. Place alternately in slits: tomatoes, fresh mushrooms and sliced onions. Put butter and 1 Tbsp of cream of mushroom soup over each potato. Season with salt, pepper and garlic powder. Sprinkle with parmesan cheese. Wrap in heavy duty foil and bake at 350˚ for 1-1 ½ hours.