Place a slice of round steak, rather thick, on bottom of small roaster and sprinkle with salt and pepper. Slice 2 large onions and spread over the meat. Cover the onions with 3 large potatoes sliced thin and sprinkle with salt and pepper. Add a pint of water and a heaping tablespoon of butter. Bake in oven 1 3/4 hours. Remove cover long enough to brown potatoes.