Preheat oven to 350F and grease a standard sized bread loaf pan with coconut oil or non-stick spray.
Stir together the almond flour, coconut flour, tapioca flour, baking soda, and salt in large mixing bowl.
In a separate bowl, whisk together mashed bananas, 2 eggs, and ¾ cups honey until smooth.
Pour the wet ingredients in with the dry ingredients and whisk until well combined, about 1-2 minutes.
In another bowl, whisk together one egg, peanut butter, and 2 tablespoons.
Spoon ½ of the bread batter into prepared loaf pan (the batter is thick since the peanut butter filling will melt into the banana bread batter).
Next, drizzle ½ of the peanut butter filling on top of the bread batter.
Then spoon the last ½ of the bread batter into the loaf pan. Bake in the oven for 25 minutes.
Lastly, remove from oven, drizzle the rest of the peanut butter filling on top of the bread, cover it loosely with foil, and bake It for another 20-25 minutes, or until a toothpick comes out clean when inserted into the center of loaf.