- 2 ripe bananas, mashed
 - 1 1/2 cups vegetable oil
 - 1 cup potato flour
 - 1 cup brown rice flour
 - 2 cups white sugar
 - 1/2 cup unsweetened cocoa powder
 - 1/2 teaspoon baking soda
 - 5/8 teaspoon cream of tartar
 - 1 1/2 teaspoons sea salt
 
- Preheat the oven too 325 degrees F (165 degrees C.) Grease a 9×13 inch baking dish.
 - In a large bowl, mix together the potato flour, rice flour, sugar, cocoa powder, baking soda, cream of tartar and salt. Blend together the bananas and oil in a separate bowl. Stir the banana mixture into the dry ingredients until well blended. Spread evenly in the bottom of the prepared pan.
 - Bake for 20 to 25 minutes in the preheated oven, until they appear dry on the top. Cool completely, and cut into squares.