Boil potatoes in skins until done. Drain and peel. Slice into baking dish. In a small sauce pan, place 3/4-1 c. sugar, sufficient water to stir the sugar (about 1/2-3/4 cup) and about 1/3 stick butter. Bring to boil and boil gently about 15 minutes. Pour over potatoes. Bake uncovered 1 hour at 350 degrees.