Step 1

Preheat oven to 350F (180C). Line an 8-inch (20 cm) square baking pan with parchment paper (if you are ok with some oil, you can, alternatively grease or spray pan with nonstick cooking spray).

Step 2

In a medium mixing bowl, whisk the mashed bananas, almond butter and cocoa powder until smooth. (Add any extra ingredients, if using).Tip: Make sure your mashed bananas are very smooth. I like to use a stick blender to make a smooth puree so that I do not end up with lumps of banana in the batter.

Step 3

Spread batter into prepared pan, smoothing the top.

Step 4

Bake in the preheated oven for 14 to 18 minutes until firmly set at outer edges and just barely set at the center (do not overbake! the brownies will set as they cool).

Step 5

Transfer to a wire rack and cool completely in pan. Cut into 9 squares.