In a large saucepan, add in the mini marshmallows, butter, and peanut butter. Place over medium heat and let melt. Stir occasionally.
Once the marshmallow mixture is smooth, pour it into the bowl of popcorn.
Mix the popcorn to coat it.
Add 1 cup of the butterfinger baking bits in with the popcorn and mix it in.
Grease your hands with non-stick cooking spray. Form 9 popcorn balls with your hands. Press them together firmly so they hold together. Place and the wax paper and let cool completely.
In a microwave-safe bowl, add in the chocolate candy melts. Place into the microwave and heat for 30 seconds. Stir.
Microwave for another 30 seconds and stir. Repeat again if the chocolate isn't quite smooth yet.
Dip the sticks into the chocolate and place each one into a popcorn ball. Let the chocolate harden.
Dip each popcorn ball into the chocolate. Let the excess chocolate drop off the popcorn balls and place back on the wax paper. Immediately after coating the popcorn balls, sprinkle the butterfinger baking bits on the top of the wet chocolate.