preheat the oven to 350 and grease a 9x5 loaf pan (you can use butter or coconut oil--whatever is easiest and you have on hand)
mash the bananas in a large bowl until they form a paste-like consistency
melt the coconut oil, and add to the mashed bananas
add in the almond butter and stir
once the coconut oil is incorporated and the mixture has cooled down a bit, add in the eggs and vanilla extract
in a separate bowl, mix up coconut flour, cinnamon, salt, baking powder, and baking soda
add the dry ingredients into the wet until incorporated
last, add in the chocolate chips and walnuts
pour into the prepared loaf pan and bake ~1 hour--check with a toothpick after 45 minutes, and bake until the toothpick comes out clean