I actually had to Google it in the end - your recipe here looked so similar to ones I've used in the past for banana cake. It turns out the differences are subtle - the cake recipe uses a lighter flour than the bread so ends up being fluffier and less dense. I've added in a link here to a recipe I've used before. Even if you don't make the cake, do yourself a favour and try the cream cheese frosting - it's awesome!!

I often add in some chopped walnuts for texture, maybe a quarter of a cup, and usually don't put the banana on top, but that's more a personal preference. With the frosting, normal milk works fine, and you can put a bit of vanilla in as well - 1 tsp or so is ample.

If you get a chance to make it, I hope you like it!! Banana Cake