In a medium bowl, sift or whisk together the oat flour, almond flour, ginger, cinnamon, baking soda, baking powder, and salt.
In a large bowl, whisk together the mashed banana, brown sugar, olive oil, and eggs. Fold in the zucchini, then fold in the flour mix.
Divide the batter equally between the muffin cups and preheat the oven to 350°F. Let the batter rest while the oven heats.
Bake the muffins for about 20 minutes, until a toothpick inserted in the center of a muffin comes out clean. Remove the tin from the oven and cool the muffins in the pan for 5 minutes, then turn them out onto a rack to cool completely.
Notes
Tips
Rest the batter – Gluten free flour always benefits from a rest before baking. At least 20 minutes is ideal, although letting it rest while the oven heats is also an option. This helps the flour to hydrate, making for a better baked muffin!
Fill the muffin cups ⅔ full for this recipe – While some muffin recipes advise filling the muffin cups to the brim, I’ve found that about ⅔ full is the sweet spot so that they rise nicely but don’t overflow.
Refined sugar-free - Swap maple syrup or coconut sugar for the brown sugar.
Oat flour substitute - Try sorghum flour by weight.
Almond flour substitute - Swap teff flour by weight.
Use gluten free all-purpose flour - If you wish, use 2 cups of your favorite gluten free all-purpose flour blend (or use my homemade gluten free flour blend!) for the oat and almond flours.