Double Chocolate Banana Bread

1: Preheat the oven to 350°F (180°C). Line a 9x5-inch loaf pan with parchment paper.

2: In a large mixing bowl, combine mashed bananas, melted butter, granulated sugar, brown sugar, egg, and vanilla extract. Whisk until smooth.

3: In a separate bowl, sift together flour, cocoa powder, baking soda, and salt.

4: Gradually add dry ingredients to wet ingredients, mixing until just combined.

5: Fold in chocolate chips.

6: Pour batter into prepared loaf pan.

7: Sprinkle chopped walnuts (if using) and additional chocolate chips on top.

8: Bake for 1 hour 15 minutes or until a toothpick inserted into the center comes out clean.

9: Remove from oven, let cool in pan for 10 minutes before transferring to a wire rack.