01 - Preheat oven to 350°F. Line a 9x5-inch loaf pan with parchment paper or grease thoroughly with butter.
02 - In a large mixing bowl, whisk together almond flour, coconut flour, sweetener, baking powder, baking soda, cinnamon, and salt until evenly distributed.
03 - In a separate bowl, whisk eggs until lightly beaten. Add melted butter, almond milk, vanilla extract, and mashed bananas. Whisk until smooth and fully incorporated.
04 - Pour wet mixture into dry ingredients. Stir with a spatula just until combined—do not overmix as this can create a dense texture.
05 - Gently fold in chopped nuts or sugar-free chocolate chips if desired, using only 3-4 strokes to distribute evenly.
06 - Transfer batter to prepared loaf pan. Use spatula to spread evenly and smooth the top surface.
07 - Bake for 45-55 minutes until golden brown. A toothpick inserted in the center should emerge clean or with just a few moist crumbs.
08 - Allow bread to cool in the pan for 10 minutes. Carefully remove from pan and transfer to a wire rack. Cool completely before slicing for clean cuts.