This is an excellent cake/bread recipe with very little fat. Notice there is no butter or oil, just bananas. I cut down to 2 larger bananas but it was a little dry so I did actually add just a little canola oil, but I definitely wouldn't have if I had used all 4 bananas. Also, I subbed in blueberries (frozen unthawed) for the raspberries because it's what I had. I stirred them in towards the end of the gentle mixing with a silicon spatula so they wouldn't get mashed up.