In a small microwave safe container, combine the chocolate chips, Nutella, and butter.
Microwave in 20 second bursts, stirring until smooth.
In a large bowl, add 6 cups of the Golden Graham cereal.
Pour the melted chocolate mixture over. Stir until the cereal has been evenly coated.
Transfer the chocolate coated cereal into a large, gallon sized Ziplock bag and add the powdered sugar.
Seal the bag and shake to coat the cereal in the sugar.
Pour the mix onto a baking sheet lined with parchment paper and allow to cool.
Once cooled, combine the mix with the remaining Golden Graham cereal and mini marshmallows.
