Preheat the oven to 325 degrees F, and grease a 9-inch round cake pan. (Optionally, an 8-inch square pan may be used.) I like to line the pan with a round of parchment paper for easy removal.
In a medium bowl, mix together the almond meal, flax meal, cinnamon, and baking soda.
In a large bowl, mash the peeled bananas with a fork. Add the eggs and whisk to combine. Add the coconut oil, honey, vinegar, and vanilla, and stir well.
Add the dry ingredients to the wet ingredients, and stir to fully incorporate.
Transfer the batter to the prepared pan and sprinkle with the optional topping(s). Bake for 30 minutes or until just cooked through the center. (The center will feel slightly springy when pressed.)
In the original recipe, she decorates the top of the banana bread before baking with sliced banana or a handful of chopped walnuts and a light sprinkle of cinnamon.
Check a few minutes early as all ovens vary. If the top is sufficiently brown but the center is still not cooked through, drape a piece of foil lightly over the top.
Remove from the oven and allow to cool before turning out of the pan.
Tightly wrapped, the bread will keep in the fridge for at least one week. May be frozen.