Preheat your oven to 350°F (175°C) and either grease a 9x5-inch loaf pan or line it with parchment paper.
In a large bowl, mash the bananas and avocado together. Then, add the eggs, honey or maple syrup, melted coconut oil, and vanilla extract, mixing until well combined.
In a separate bowl, whisk together the whole wheat flour, baking soda, baking powder, salt, and cinnamon.
Gradually incorporate the dry ingredients into the wet mixture, stirring gently until just combined—be careful not to overmix.
Fold in ½ cup of chocolate chips.
Pour the batter into the prepared loaf pan and smooth the top. Add ¼ cup of chocolate chips to the top.
Bake for 60 minutes, or until a toothpick inserted into the center comes out clean.
Let the bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely before slicing.