What egg replacers can be used in boxed mixes? I've tried flax seed eggs, and ener-g egg replacer with absolutely awful results. I was wondering if I was just doing it wrong so I got some mix for my family who are still omnivores and made the mix with eggs and they turned out beautifully. Should I just be making all my vegan brownies and cookies from scratch and not bother with boxed mixes? Because I tried to make vegan brownies from a recipe online and they turned out absolutely dreadful.