Making Double Chocolate Banana Bread is easy if you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan.
2. Prepare Bananas: In a mixing bowl, mash the ripe bananas until smooth, leaving some small chunks for texture.
3. Mix Butter and Bananas: Stir the melted butter into the mashed bananas until well combined.
4. Combine Wet Ingredients: Mix in the baking soda and salt. Then, add the sugar, beaten egg, and vanilla extract, stirring until smooth.
5. Incorporate Dry Ingredients: Gently fold the flour and cocoa powder into the banana mixture until just combined. Avoid over-mixing.
6. Add Chocolate and Nuts: Fold in the chocolate chips and nuts (if using) until evenly distributed.
7. Fill the Pan: Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
8. Bake: Place the pan in the preheated oven and bake for about 60 minutes, or until a toothpick inserted into the center comes out clean.
9. Cool: Allow the banana bread to cool in the pan for 10-15 minutes before transferring to a wire rack to cool completely.
10. Slice and Enjoy: Once cooled, slice the bread and enjoy the incredible chocolatey goodness!