Use a hand mixer to mix one pound of the powdered sugar into the mashed potatoes, in a large bowl.

Once the mixture is soupy, add the rest of the powdered sugar plus more if needed to get a dough like consistency.

Roll the dough out onto a piece of parchment paper that has been heavily dusted with powdered sugar.

Warm the peanut butter in the microwave for about 20 seconds to thin it.

Spread the peanut butter over the dough, leaving about a half inch from the edge.

Roll the dough into a jelly roll, and place the seam side down.

Place in the refrigerator until the dough has stiffened enough to slice.

Slice into bite size portions and keep refrigerated and covered with plastic until ready to eat.

Enjoy!