Add ins
To a large bowl add all the Chex, pretzels, and stir to combine; set aside.
To a medium, microwave-safe bowl, add the peanut butter, butter, chocolate chips, and heat for 30 seconds. Stop to check and stir until smooth. If needed, heat in 10-second bursts until mixture can be stirred smooth.
Pour the melted chocolate mixture over the cereal and stir to combine; set aside.
To a gallon-sized ziptop bag, add the confectioners' sugar, cocoa powder, and stir to combine.
Add the coated cereal to the bag, seal, and shake well to combine.
Transfer cereal to a large baking sheet in a flat layer and allow it to cool and set up. Tip - Make sure it cools well and completely before moving on, at least 30 minutes, or the add-ins in the next step will melt.
Add the M&Ms, peanut butter cups, pretzels, and stir to combine.
Store in an airtight container at room temp for 2-3 weeks or in the freezer for up to 4 months.
