Cook potatoes in boiling water to cover 20 minutes or until tender; cool to touch. Peel and slice potatoes. Arrange potato and apple slices in a 2-quart baking dish.
Combine sugar, butter, and 1/4 cup water; pour over potato and apple.
Bake at 350° for 30 minutes, basting after 20 minutes.
Find recipes with ingredients that you have on hand.