In a medium bowl, combine peanut butter, powdered sugar, and softened butter until well-mixed.

Add candy corn and stir to distribute.

Roll mixture into small (1 1/2 inch) balls, using your hands, and set on parchment paper-lined baking sheet.

Melt white chocolate over low heat; roll peanut butter balls in melted chocolate to coat.

Set on prepared baking sheet to harden; top each with one piece of candy corn.

Once all balls are coated, place baking sheet in refrigerator to cool and harden completely.