Preheat your oven to 350 °F degrees and grease a loaf pan. Set the loaf pan aside.
In a mixing bowl, whisk together the oat flour, cocoa powder, coconut sugar, baking powder and salt.
In a separate bowl, mash the bananas until fairly smooth.
Add the nut butter and vanilla to the bananas and mix until combined.
Pour the banana mixture and the dairy free chocolate chips into the flour mixture and mix until just combined. It might look like the batter is too dry, but just keep mixing.
Pour the batter into your prepared loaf pan and smooth the top, sprinkling more chocolate chips on the top if desired.
Bake the bread for 20 minutes. Remove the bread from the oven and cover the top with aluminum foil before baking the bread for another 10 minutes, or until a toothpick inserted into the center comes out clean.
Remove the bread from the oven and allow it to cool for a few minutes before removing and allowing it to cool completely on a wire rack.
Slice and enjoy!