01 - 
                Preheat your oven to 175°C (350°F). Grease and line a 9×5-inch loaf pan with parchment paper.
              
              
              
                02 - 
                In a large bowl, mash the bananas and mix in the melted butter, sugar, eggs, and vanilla extract until well combined.
              
              
              
                03 - 
                In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.
              
              
              
                04 - 
                Gradually add the dry ingredients into the banana mixture, stirring gently until just combined. Fold in chocolate chips.
              
              
              
                05 - 
                Pour the batter into the prepared loaf pan and sprinkle extra chocolate chips on top. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
              
              
              
                06 - 
                Let the banana bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.