Variations: could add chocolate chips, peanut butter, carob chips, ground flax/hemp/chia, or anything else you want to add!
Combine mix with melted margarine, some water (or non-dairy milk), and one banana (smash up with a spoon or blend the banana before adding it. I blended the banana with Ener-g egg replacer and a tiny bit of water too! but banana alone works). Bake for 20 minutes at 350 in 13×9 pan. Makes 20 brownies.