Preheat your oven to 350°F (175°C) and grease a 9x5-inch loaf pan.
In a large mixing bowl, combine the mashed bananas and creamy peanut butter, mixing well until smooth.
Add the melted coconut oil, brown sugar, and granulated sugar to the banana mixture. Mix until well incorporated.
Beat in the eggs one at a time, followed by the vanilla extract, mixing until smooth.
In a separate bowl, whisk together the flour, baking soda, salt, and cocoa powder until combined.
Gradually fold the dry ingredients into the wet mixture using a spatula, being careful not to overmix.
Gently stir in the chocolate chips and nuts (if using) until evenly distributed throughout the batter.
Pour the batter into the prepared loaf pan, spreading it evenly.
Bake in the preheated oven for 50-60 minutes, or until a toothpick inserted in the center comes out clean.
Allow the bread to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.
Notes
Slice the bread and serve warm with a drizzle of peanut butter on top or a sprinkling of chocolate chips for an elegant touch. Enjoy with a glass of milk or your favorite hot beverage!