- Preheat your oven to to 180 Deg C or 350 Deg F. 
- Grease a 9x5-inch loaf pan with oil or any non stick cooking spray and set aside. 
- In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. - 1/2 cup Cocoa Powder, 1 teaspoon baking soda, 1/2 teaspoon salt, 1 cup Whole Wheat Flour 
- In another large bowl, mash the ripe bananas with a fork. - 3 large bananas 
- Add the melted butter/oil and stir until combined, either with hand or a hand blender - 1/2 cup vegetable oil or canola or melted coconut oil 
- Add in in the brown sugar, egg, and vanilla extract. Stir until smooth. - 1 large egg, 3/4 cup packed dark brown sugar, 1 teaspoon pure vanilla extract 
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- Now add the dry ingredients into the wet ingredients. 
- Be careful not to over mix. 
- Fold in 3/4 cup of the chocolate chips. - 1 cup dark chocolate chips divided 
- Pour batter into prepared pan. 
- Sprinkle the remaining 1/4 cup of chocolate chips over the top of the bread. 
- Bake for 50-65 minutes, or until a toothpick inserted into the center of the bread comes clean. 
- When you insert the toothpick you might have some melted chocolate chips, that is okay. 
- Remove from the oven and let it cool on a wiring rack along with the pan for 10-15 minutes. 
- After you are able to touch the pan, run a knife along the edges. 
- Gently turn around and let it cool on a wire rack. 
- Cut it into slices and enjoy them warm. 
- This stays fresh on the counter for 4-5 days in moderate temperatures. You can store in refrigerator or freeze individual slices.