Preheat Oven: Preheat your oven to 350°F (180°C).
Prepare Zucchini: Grate the zucchini and squeeze out excess moisture using a kitchen towel.
Mix Dry Ingredients: In a bowl, combine almond flour, coconut flour, sweetener, baking powder, baking soda, salt, and cinnamon.
Combine Wet Ingredients: In another bowl, whisk together eggs, almond milk, melted coconut oil, and vanilla extract.
Combine Mixtures: Add the wet ingredients to the dry ingredients and mix well. Fold in the grated zucchini until evenly distributed.
Fill Muffin Cups: Line a muffin tin with paper liners and fill each cup with the batter.
Bake: Bake in the preheated oven for 20-25 minutes or until a toothpick inserted into the center comes out clean.
Cool: Allow the muffins to cool in the tin for 10 minutes, then transfer to a wire rack to cool completely.