Preheat the oven to 350 degrees F. Prepare a 9-in. x 9-in. square baking dish by spraying it with cooking spray or rubbing coconut oil around the sides and bottom so the brownies do not stick.
In a large bowl mash the bananas with a fork until smooth. Add the almond butter and mix until smooth. Add the cocoa powder and optional cinnamon and blend until no visible cocoa powder is seen.
Pour the batter into the prepared baking pan and bake for 20-25 minutes or until set and slightly dark on the top. Remove from the oven and let cool completely before slicing.
*These brownies are not super sweet and made for those trying to really get a clean eating diet. Optional to add drops of liquid Stevia to sweeten the recipe more (add according to taste). *If the almond butter is hard, heat it in the microwave for about 20-30 seconds or until it is softened before mixing with the banana.*If you are making this for Whole30 diet purpose: Please note that the Whole30 book reads this about mixing cocoa with fruit: "However, we highly discourage mixing cacao (cocoa) with dates, figs, or other fruits to make chocolate-y confections during your program." This is discouraged (not off limits) due to the fact that more sweets feeds more sugar cravings- with any diet. The purpose of this recipe is if you are on the program and feeling like you will falter and cave into a cookie or regular brownie, this is a great recipe to transition to keep the diet on-track as you detox from sugar cravings.*** Updated 7/9/19