To make this Triple Chocolate Banana Bread, preheat your oven to 350 degrees and butter the bottom and sides of a standard loaf pan. 

Start by adding sugar and butter to a large mixing bowl and beating them together. Add in the vanilla and eggs and mix to combine. In a separate bowl, add all purpose flour, baking soda, baking powder, espresso powder, cocoa and salt and sift together before adding the dry ingredients to your wet ingredients. Lightly mix together until just combined. 

Remove the peels from your over-ripe bananas and put them into a small bowl. Using the back of a fork, mash your bananas well and then pour them into your banana bread batter. Add the walnuts and chocolate chips to the batter as well and then using a large spoon or spatula, stir by hand a few swipes until everything is incorporated. Pour the batter into your prepared loaf pan and bake for 50 - 55 minutes or until a toothpick comes out clean when inserted. 

Let the Triple Chocolate Banana Bread cool for 15 minutes before running a knife around the inside edge of the baking pan and turning the bread out upside down. Turn your banana bread right side up and move to a cooling rack to cool completely. 

Once completely cooled, add butter to a large mixing bowl along with sifted powdered sugar, sifted cocoa powder, salt, vanilla and milk. Mix well and then frost your Triple Chocolate Banana Bread and garnish with more chocolate chips.