In a large bowl using an electric mixer combine the mashed potatoes, butter, vanilla and one cup of powdered sugar until combined.

Add remaining powdered sugar, 1 cup at a time until all combined. The dough should not be sticky and should be like playdoh.

Cover and refrigerate the dough for just 1 hour.

Once the dough is chilled split it in half.

Dust your parchment lines surface with powdered sugar and roll out a rectangle about ¼ inch thick.

You want to work quickly so your dough doesn’t crumble.

Spread half of the peanut butter on the rolled out dough.

Starting with the longer side of your rectangle and using the parchment paper to help you roll the it in a tight log.

Wrap the log in parchment paper and refrigerate for another hour.

Repeat with the other half of the dough.

Slice the logs into about ½ pieces.

Serve!