Preheat oven to 350°F. Line a large loaf pan with parchment paper. Set aside.
In a medium bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt. Set aside.
In a large bowl, mash the ripe bananas with a fork. Add the melted peanut butter, light brown sugar, canola oil, egg ,and vanilla extract and stir until combined and smooth.
Combine the wet ingredients with the dry ingredients. Pour into the prepared loaf pan and top with thinly banana slices.
Bake for 55-60 minutes, until a toothpick inserted in the center of the loaf comes out clean. Cool on a wire rack for 15 minutes before slicing.
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Notes
Recipe: This recipe is adapted from Broma Bakery. I used 1 egg instead of 2, added more bananas (1 1/2 cup instead of 1 cup), and used light brown sugar instead of granulated white sugar.Storage: Store in an airtight container at room temperature or in the refrigerator for up to 4-5 days. You can freeze the bread for up to 3 months. Just thaw overnight in the fridge and bring to room temperature before serving.Substitutes: For best results, follow the recipe as is. However, here are some common substitutes that would work well in this recipe.
Instead of canola oil, you can use any other neutral oil like coconut oil.
Instead of light brown sugar, you can use granulated white sugar.
Instead of all purpose flour, you can use whole wheat white flour.
To make this gluten-free, use an all-purpose gluten-free flour mix. Do not substitute only almond flour or only coconut flour.