This is what Mom called her  potato peanut butter candy  because she knew we wouldn't eat candy that had peanut butter and potato in the same name. Here's my recipe:

1 medium potato, peeled and boiled whole

1 teaspoon good vanilla

2 -3 lbs. of powdered sugar

2-3 tbsps. milk

1 bag white chocolate chips

1 large jar of peanut butter

Now how simple is that?   Mash the spud with vanilla and milk, adding confectioner's sugar a little a t at time. It will be soupy at first!  Then add the white chocolate chips. Keep adding sugar until the mixture is  "rolled dough" consistency. Roll out the dough on a clean cloth dusted generously with confectioner's sugar into a long rectangle. Spread the peanut butter on and roll up, long side to long side. Let it set in the towel for half an hour in the fridge and then slice. Prepare for a major sugar buzz!