Add the Nutella and one cup of chocolate chips to a microwave-safe bowl. Microwave in 20-second increments for up to two minutes, stirring after each heating, until everything is melted and smooth.
In a large mixing bowl, fold the cereal into the melted chocolate until well combined and evenly coated.
Add your graham cracker crumbs and powdered sugar to a ziplock bag. Scoop in the chocolate-covered cereal. Seal the bag and shake well until all the cereal is coated in crumbs and powdered sugar.
Pour the mixture onto a baking sheet lined with parchment paper. Place the sheet in the freezer until the chocolate is set.
In a large serving dish, add your prepared muddy buddies, teddy grahams, marshmallows, and chocolate chips. Mix until well combined.
Top with Hershey bar squares.
Notes
Nutrition information is provided as an estimate only.