Preheat the oven to 180C/350F. Line a loaf pan with parchment paper and set aside.
In a large mixing bowl, mash the bananas then add both sugars and melted coconut oil. Whisk together until smooth.
Add the flour, baking powder, baking soda, salt, and cinnamon and mix until fully incorporated. Fold through the pecans.
Pour the batter into the lined pan, then sprinkle with cinnamon and sugar. Bake for 35-40 minutes, or until a toothpick comes out clean from the center.
Let the banana bread cool completely before slicing and serving.
