I finally got around to making the No Pudge Brownies from Trader Joe's. I love the idea of using FF Yogurt instead of oil and eggs. The brownies are too rich for me though.. I was wondering though, if replacing eggs and oil with yogurt would work with all boxed cake/brownie mixes such as betty crocker or duncan hines, and not just this one brand of brownies from trader joe's. If anyone has tried this please let me know. I also noticed that these brownies had a tougher texture. Is it because of the yogurt or just how they are supposed to be?