You might want to try Atkins banana nut muffins--they taste like the real deal and they are only a few grams per muffin. FYI you may want to make sure that you use a non-stick muffin pan and use muffin tin liners something about the ingredients (most likely the sugar sub. combined with the oil) leave this weird sticky residue in the bottom of the pan that is really hard to get out of a regular aluminum pan after being baked. That is their ONLY drawback (and that you can't stop eating them!). Good luck!
Heidi