HOT-POT (another)

1/2 lb. potatoes, 3 oz. Spanish onion peeled and sliced, 1/2 teacupful tomatoes, 1/2 oz. of butter, pepper and salt to taste. Arrange the potatoes, onions, and tomatoes in layers in a small pie-dish, and sprinkle pepper and salt between the vegetables. Cut the butter in little bits, and scatter them over the top. Fill the dish with boiling water, and boil the hot-pot for 1 to 1-1/2 hours, adding a little hot water if needed.