Preheat your oven to 350°F (175°C). This ensures that the bread bakes evenly and rises properly.

Grease a 9x5 inch loaf pan with butter or non-stick spray to prevent sticking.

In a large mixing bowl, mash the ripe bananas with a fork until smooth. Ripe bananas provide natural sweetness and moisture.

Add the melted butter to the mashed bananas and mix until well combined.

Stir in the granulated sugar, eggs, and vanilla extract until the mixture is smooth and creamy.

In a separate bowl, whisk together the sifted flour, cocoa powder, baking soda, and salt. This helps to evenly distribute the leavening agent and prevents clumps.

Gradually add the dry ingredients to the wet mixture, folding gently with a rubber spatula until just combined. Be careful not to overmix, as this can lead to a dense bread.

Fold in the chocolate chips, ensuring they are evenly distributed throughout the batter.

Pour the batter into the prepared loaf pan, smoothing the top with the spatula.

Bake in the preheated oven for 55-60 minutes, or until a toothpick inserted into the center comes out clean. This ensures the bread is cooked through.

Once baked, remove from the oven and let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely.

Slice the chocolate banana bread once it has cooled. Serve plain or with a spread of butter for added richness.