6 Idaho potatoes (2 1/2 lbs.)
1/2 c. butter
3/4 c. water
1 pkg. dry onion soup mix

Cut unpeeled potatoes into 1/4 inch slices. Melt butter in water, add dry onion soup mix. Layer potatoes and liquid into 2 quart casserole (ending with liquid). Bake covered in a 350 degree oven for 1 hour. Will keep in warm oven indefinitely. Very good the next day.