I made it with strawberries since I hate raspberries and it was yummy! I slice all the fruit so I get it all in one bite. The peanut butter gives it the right amount of saltiness I've made it several times. I think in the winter I'll use frozen fruit so I can still eat it.
update: I made it with frozen fruit and applesauce instead of mashed banana and it was ok, but not as good as fresh. This seems to be best as a summer recipe.