Preheat the oven to 350° and line a 9x5-inch loaf pan with parchment paper and set aside.
In a large bowl whisk together almond flour, flaxseed meal, yeast (for flavor, not as a rising agent), salt, and baking soda.
In another bowl whisk together the egg yolks, stevia, vinegar, and melted butter. In a separate bowl whip the egg whites until they reach very stiff peaks.
Add the egg yolk mixture to the dry ingredients and mix with a hand mixer or stand mixer until combined. Mix ⅓ of the egg whites into the dough to loosen the batter. It will still be pretty thick, so as gently as you can, fold in the remaining egg whites until fully incorporated and no streaks of white remain.
Pour into the prepared loaf pan and cover with foil. Bake for 25 minutes before removing the foil and baking for another 25 minutes. Let cool slightly before transferring to a cooling rack to cool completely before slicing.
For a sweeter bread, try adding a teaspoon of ground cinnamon! It pairs very well with the nuttiness of the bread.