Step 1

Preheat the oven to 350F. Line a 9x5 loaf pan with parchment paper.

Step 2

Mix melted butter, brown sugar and granulated sugar in a large bowl.

Step 3

Add in egg and mix well.

Step 4

Add in mashed bananas and buttermilk to the egg mixture and mix using an electric hand mixer or a whisk.

Step 5

Add in flour, cocoa powder, baking powder and baking soda and mix with a wooden spoon until combined and no lumps left. Do not over mix.

Step 6

Fold in 1/2 cup chocolate chips into the batter.

Step 7

Pour the chocolate banana bread batter into the loaf pan and top with 1/2 cup remaining chocolate chips.

Step 8

Bake in the oven for 45-55 minutes until a toothpick inserted in the middle comes out with little to no crumbs.

Step 9

Cool completely before slicing.