Preheat your oven to 180°C (350°F) and grease a 23×13 cm loaf pan.

In a mixing bowl, combine the mashed bananas, sugar, vegetable oil, almond milk, and almond flour.

In another bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon if using.

Gently mix the dry ingredients into the wet ingredients without over mixing. Fold in the chopped walnuts.

Pour the batter into the greased loaf pan and bake for 50-60 minutes, or until a knife inserted into the center comes out clean.

Let the banana bread cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely before slicing.