01 -
Preheat the oven to 350°F and grease a 9×5-inch loaf pan.
02 -
In a large bowl, mash the ripe bananas with a fork until completely smooth.
03 -
Add the melted butter to the mashed bananas and stir until blended.
04 -
Add baking soda and salt to the banana mixture and mix thoroughly.
05 -
Stir in sugar, beaten egg, and vanilla extract until the mixture is smooth and fully combined.
06 -
Gently fold in the all-purpose flour and cocoa powder, mixing only until just incorporated.
07 -
Add the ground espresso or instant coffee and mix until evenly distributed.
08 -
Fold in the chocolate chips if using.
09 -
Pour the batter into the prepared loaf pan and smooth the surface with a spatula.
10 -
Bake in the preheated oven for 45 to 50 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
11 -
Allow the bread to cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before slicing.