Place cereal in a medium bowl and brownie mix in a zip top gallon bag.

Melt chocolate chips and peanut butter in the microwave, stirring every 30 seconds, or in the top of a double boiler over simmering water. I used the double boiler method because my microwave burns chocolate no matter how careful I am.

Pour the chocolate and peanut butter over the cereal and stir well to coat all the pieces.

Pour the cereal into the bag with the brownie mix, close and shake to coat.

Spread on waxed paper to cool. Store in an airtight container.