Prepare the Mixture: In a large mixing bowl, combine the peanut butter, powdered sugar, crushed Butterfinger, and vanilla extract. Stir until well combined and smooth.

Form the Balls: Scoop out about 1 tablespoon of the mixture and roll it into a ball. Place each ball on a baking sheet lined with parchment paper. Repeat until all the mixture is used. Chill the balls in the refrigerator for about 30 minutes to firm up.

Melt the Chocolate: In a microwave-safe bowl, combine the chocolate chips and coconut oil (if using). Microwave in 20-second intervals, stirring in between, until the chocolate is fully melted and smooth.

Dip the Balls: Using a fork or dipping tool, dip each chilled ball into the melted chocolate, coating it completely. Let any excess chocolate drip off before placing the ball back on the parchment-lined baking sheet.

Chill and Set: Once all the balls are coated in chocolate, return the baking sheet to the refrigerator for about 10-15 minutes, or until the chocolate has hardened.