Never buying a box again. So simple, so easy!!! Brownie Mix $0.30 /mix. 1 Cup Sugar, 1/2 Cup Flour, 1/3 Cup Cocoa, 1/4 tsp Salt, 1/4 tsp Baking Powder. You can put it in containers, ziplock bags or wrap it up pretty for a present. Add: 2 Eggs, 1/2 Cup Vegetable Oil, 1 teaspoon …