Preheat the oven to 350°F (180°C). Lightly grease a 9x5-inch (23x13 cm) loaf pan and line with parchment paper.
Place the bananas in a medium bowl and mash with a fork.
In a medium bowl combine oat flour, cocoa powder, salt, baking powder, baking soda and cinnamon.
In a large bowl, using a whisk or an electric hand mixer, cream together the eggs with honey/maple syrup, butter and oil. Add yogurt and vanilla extract and mix until well incorporated.
Mix in the mashed bananas.
Gently incorporate the flour mixture.
Pour the banana batter into the prepared loaf pan.
Top with chocolate chips or chunks.
Bake for about 40-45 minutes until golden brown and a toothpick inserted into the center comes out clean. If the bread browns too fast, cover with aluminum foil and continue baking.
Let bread cool completely and refrigerate before slicing. This step ensures a clean, easy cut. Enjoy!