1/4 cup cooked white potatoes
confectioners sugar
1 tsp vanilla
peanut butter (smooth or crunchy)

Mash potaoes, add vanilla, and approximately 1 box of confectioners sugar until soft dough is formed. Divide dough in fourths. Roll between wax paper until 1/8 inch thick. Spread thin layer of peanut butter on each layer. Roll up like jelly roll. Refrigerate overnight. Cut into pieces and serve - may sprinkle with confectioners sugar if desired.

Warning: this stuff is highly addictived. :-)