1 medium potato
1 box or bag powdered sugar
peanut butter

Boil potato in jacket until tender. Peel potato and mash in large bowl. Add powdered sugar 1 cup at a time until a firm dough is made. Roll between waxed paper to 1/4-inch thickness. Remove top layer of paper. Put peanut butter on potato dough. Roll jelly roll style. Chill well. Slice into pinwheel candies.