My grandma's banana bread 'secret' was that if you didn't have any over-ripe bananas you could use just regular-ripe yellow ones and then add a couple of tablespoons of applesauce to add the moistness. I've played with that and tried a couple of tablespoons of the strawberry or other flavored applesauces. Can't say that it really alters the flavor much, but the applesauce does help with the moistness!