Creating Double Chocolate Banana Bread is a straightforward and enjoyable process. Follow these steps to achieve the perfect loaf:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease a 9×5-inch loaf pan to ensure easy removal later.

1. Mash Bananas: In a mixing bowl, mash the ripe bananas until smooth. You can use a fork or potato masher for this.

1. Combine Butter and Sugar: Stir in the melted butter into the mashed bananas. Mix in the granulated sugar until well incorporated.

1. Add Egg and Vanilla: Add the beaten egg and vanilla extract to the banana mixture, stirring until fully combined.

1. Mix Dry Ingredients: Sprinkle in the baking soda and salt, mixing gently. Then, add the all-purpose flour and cocoa powder, stirring until just combined. Be careful not to overmix, as this can lead to a denser loaf.

1. Fold in Chocolate Chips: Gently fold in the semi-sweet chocolate chips and nuts (if using), ensuring even distribution throughout the batter.

1. Pour into Pan: Transfer the batter into the prepared loaf pan, smoothing the top for an even bake.

1. Bake: Place the pan in the preheated oven and bake for 60-70 minutes, or until a toothpick inserted in the center comes out clean.

1. Cool: Once baked, remove the banana bread from the oven and let it cool in the pan for about 10-15 minutes. Then, transfer it to a wire rack to cool completely.

1. Slice and Enjoy: Once cooled, slice the Double Chocolate Banana Bread and enjoy it alone or with your favorite toppings.