In a large bowl, mix together powdered sugar, graham cracker crumbs, crushed Butterfinger bars, melted butter, and peanut butter until fully combined.
Using a tablespoon or small cookie scoop, roll the mixture into 1-inch balls. Place them on a parchment-lined baking sheet.
Refrigerate for at least 30 minutes, or until firm. If needed, chill an additional 10 minutes.
Melt the chocolate wafers according to package directions until smooth.
Dip each ball completely into the melted chocolate, allowing excess to drip off.
Place coated balls back onto the parchment-lined sheet.
Before the chocolate sets, sprinkle crushed Butterfinger pieces on top.
Let the chocolate harden completely before serving.
Enjoy!