AB's Christmas Crack

Steps

1. 1Combine the Cheerios, Rice Chex, Corn Chex, M&M's, nuts, pretzels, and cacao nibs in your biggest mixing bowl.
2. 2Roll out a couple large sheets of wax or parchment paper on a work surface away from direct sunlight or heat.
3. 3Combine the white chocolate and espresso powder in a medium-size, microwave-safe bowl and nuke on high power in 30-second increments, stirring with a silicone spatula between each blast. After about 5 nukes (yes, that's a technical term), the chocolate would start to melt and smooth out. If there are still a few solid chips here and there after 5 blasts, don't worry about it as it's better to under-melt a bit than to burn even a little of the mass.
4. 4Pour the melted chocolate over the cereal mixture and mix very well with a large silicone spatula, or better yet, your hands wearing disposable gloves.
5. 5Divide the mixture in half and spread evenly on the wax or parchment paper. Leave it for at least 30 minutes to set before breaking up and stashing in airtight containment.