Hmmm... Next time you might want to try mashing them, mix it with flour and a liiiitle bit of baking soda. Mix mix mix, fry the dough, using a spoon to put them in oil. It's a different texture, since there won't be whole banana, and it's in bite-size pieces. Also how are you making the dough? Again I'm curious.
I didn't make them, my mom did. I just made the mochi.
The banana is cut in slices, and baking soda is used. Your description, other than the mashing part, is exactly how they are made.