In a medium bowl melt chocolate chips, peanut butter and butter,ย
After mixture is melted, pour into the Chex mix and mix until cereal is coated.
Add coated cereal and powdered sugar into a gallon-size ziplock bag and shake until cereal is well coated.
Add candy corn, Halloween sprinkles, and Reese's pieces to the ziplock bag and shake to mix it all together.