Potato Candy

I used to love this as a kid!

2 lb Confectioners' sugar (may take a little more or a little less)
1/2 c potatoes, peeled, boiled, drained and mashed
1 jar peanut butter

Mix sifted sugar into mashed potatoes, a little at a time, by hand; do
not use electric mixer. Sprinkle waxed paper with additional
confectioners' sugar; take ball of sugar-potato mixture, about the size
of a baseball, roll out as for pastry, and spread with peanut
butter. Roll over and over like jelly roll; makes enough for two rolls,
each about a foot long. Wrap in Saran or foil and chill well. Slice into
1/2" thick rounds.