Never buy boxed brownie mix again!
So simple, so easy. Not just frugal but cuts out the unknown ingredients.
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. Add: 2 Eggs, 1/2 Cup Vegetable Oil, 1 teaspoon Vanilla.
Bake @ 350 degrees for 20-25 minutes.
Source: http://afewshortcuts.com/2012/05/homemade-brownie-mix/