In a large bowl add the chocolate chips, peanut butter, and butter cubes. Heat for 1 minute in the microwave. Stir and heat for 20 second intervals until it is completely melted. Stir in the vanilla extract

Add the cereal to the melted chocolate together until everything is very well coated.

Add about half of the cereal mixture to a gallon sized plastic bag, add half of the powdered sugar. Seal the bag and toss until the pieces are all coated. Pour onto a baking sheet. Repeat with the rest of the cereal and sugar.

Let the cereal mixture set up for about an hour for the chocolate to harden. Add in the candies and toss together.