Add melted chocolate, spices(or coffee) to banana and mix well.
If using oil, add now and mix well.
In a bowl, mix 1/2 cup oat flour, 1/2 cup ground cashew, 1/2 cup spelt flour and baking powder.
Add this to the banana mixture and mix well.
Add more spelt flour if needed to get a muffin batter type thick batter. The flour needed will depend on what size bananas you used, the chocolate and oil content.
Add chocolate chips for double chocolate version.
Drop the batter in parchment lined or greased 8 inch cake pan.
Even out and bake in pre-heated 365 degrees F / 180ºc for 40-45 minutes or until a toothpick from the center comes out clean.