Preheat oven to 350 degrees F. Grease an 9 in x 5 in loaf pan and line with parchment paper.
In a large bowl, mix the olive oil and coconut sugar with a fork or whisk. Add the eggs, vanilla, and mashed bananas and whisk again until well mixed.
In another bowl, combine the almond flour, tapioca flour, coconut flour, baking soda, salt, and cinnamon. Mix with a fork until blended.
Pour the bowl of dry ingredients into the bowl of wet ingredients and mix until just combined.
Pour the banana bread batter into the loaf pan. Bake for 45-55 minutes, until golden brown and a toothpick comes out mostly clean. ( Mine has taken 45 minutes and 50 minutes before... it just depends on the oven I've used to bake it).