01 -
Place the Rice Chex cereal in a large mixing bowl.
02 -
In a microwave-safe bowl, combine chocolate chips and peanut butter.
03 -
Microwave in 30-second intervals, stirring after each, until smooth and melted. Stir in vanilla extract.
04 -
Pour the melted chocolate mixture over the Rice Chex cereal. Gently toss to coat all pieces evenly.
05 -
In a large zip-top bag, combine the dry brownie mix and powdered sugar. Add the coated cereal, seal the bag, and shake until the cereal is fully coated.
06 -
Spread the puppy chow on a baking sheet lined with parchment paper. Allow it to cool and set.
07 -
Transfer to a serving bowl or store in an airtight container.