01 -
In a microwave-safe bowl, combine the semisweet chocolate chips and peanut butter. Microwave in 20-second intervals, stirring after each, until smooth and fully melted. Stir in the vanilla extract.
02 -
Place the Rice Chex cereal in a large mixing bowl. Pour the melted chocolate and peanut butter mixture over the cereal. Toss gently to coat all the cereal pieces evenly, being careful not to crush them.
03 -
In a large resealable plastic bag, combine the powdered sugar and dry brownie mix. Shake or mix well.
04 -
Add the chocolate-coated cereal to the bag with the powdered sugar and brownie mix. Seal the bag tightly and shake vigorously until all the cereal pieces are evenly coated.
05 -
Spread the coated cereal onto a baking sheet lined with parchment paper and allow it to cool completely. Once cooled, transfer to a serving bowl or store in an airtight container.