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. | See more about Boxed Brownies, Egg Cups and Cut Outs.