How do you get dry cocoa mix out of carpet?

First, remove all the possible loose brownie crumbs by vacuuming over the brownie that fell on the carpet. Then, use some really tough stain remover (like Resolve, which works the best), and spray it on the carpet. Let it soak for a minute or two, and then try scrubbing it with paper towels or something. Repeat until brownie is gone.