What to do with an almost full box of Hershey cocoa powder? Bake brownies, of course! And where to find a good recipe? At Hershey's, of course! See the link below.
You just blend the cocoa together with melted butter, sugar, vanilla extract, eggs, flour, baking powder, and salt, and pour it into a greased baking pan. About 30 minutes in a 350-degree oven gets the job done. And for some portion control, I cut them into small pieces, as shown in the picture below, and used considerable willpower to eat only one a day.