Preheat the oven to 350F. Line a loaf pan with parchment paper or grease lightly with a bit of vegetable oil.
Mix the ground flax with water in a large mixing bowl and set aside for five minutes to thicken.
Add the bananas and mash with a fork or a hand mixer.
Add the milk, coconut oil, almond butter, sugar, honey and salt. Whisk well to combine.
Stir in the baking powder, ground almonds, gluten-free flour mix and oats. Mix again.
Fold in half of the walnuts quantity.
Transfer the batter to the prepared pan. If necessary, level the top with the back of a spoon. Add the remaining walnuts on top.
Take the pan to the oven and bake for about 60 minutes. Make the toothpick test: insert a toothpick in the center of the loaf. If it comes out clean or with a few crumbs, the banana bread no eggs is already cooked. Otherwise, leave it for 5 to 10 more minutes in the oven.
After removing the pan from heat, let the loaf rest for ten minutes. If you lined the pan with parchment paper, use it to pull out the eggless banana bread. In case you greased it, use a knife to loosen the sides and then take it out.
Let the loaf cool completely before slicing it.