Over a double broiler or in the microwave (in 20-second increments), melt chocolate on low heat, stirring frequently to avoid the chocolate burning or seizing. Once melted, pull off of heat.
In a separate bowl, melt peanut butter in the microwave for 20-30 seconds, or until liquidy.
Chop the six candy bars into small pieces, set aside.
Mix 2 cups of cereal with chocolate, stirring the cereal gently in order to coat all pieces evenly. Add half of the chopped candy bars to the mix, stirring gently.
Mix 2 cups of cereal with the peanut butter, stirring gently in order to coat all pieces evenly. Add the last of the chopped candy bars, stirring gently.
In 1 large gallon ziplock bag, mix 1/2 cup of powdered sugar and chocolate cereal together. Zip the bag up (with air inside) and shake the cereal until all pieces are coated with powdered sugar (some will be more coated than others, which is fine).
In a second large gallon ziplock bag, mix 1/2 cup of powdered sugar and peanut butter cereal together. Zip the bag up (with air inside) and shake the cereal until all pieces are coated with powdered sugar (some will be more coated than others, which is fine).
Once coated, mix both cereals in a large bowl, adding in the Butterfinger Peanut Butter Cup Minis.
Enjoy!