I followed the recipe exactly on this one and they came out perfectly. There are definitely some changes I want to try next time though, and like I said I always have bananas left at the end of the week so I'm sure I'll get a chance for a next time. Nuts in addition to or instead of chocolate chips...a lot of reviewers said they used half or all whole wheat flour....low-fat yogurt probably wouldn't make a difference in taste. Next time I want to fill the muffin pans more for a little bigger muffins because I'm sad after they're gone in a few bites! Overall they have a great taste and texture....I almost don't want to share them at work and keep them all for myself!