In less than 30 minutes, you could be eating these moist, flavourful and healthy zucchini muffins - with or without chocolate! - that are loaded with whole grain oats, flax and grated zucchini.
Preheat oven to 400℉ (205℃). Line a 12 well muffin pan with parchment liners.
In a large bowl, whisk together the flour, oats, flax, cinnamon, baking powder and soda, and salt. Set aside.
In a medium bowl, whisk together the zucchini, oil, milk, maple syrup, apple cider vinegar and vanilla.
Pour the wet ingredients into the dry ingredients and mix just until combined. Fold in chocolate if using.
Fill muffin tin with ¼ cup scoops of the batter. Bake for 14 - 16 minutes, until tops are dry and a tooth pick inserted comes out clean. Don't over bake! Mine are always done by 15 minutes.
Let cool in pan for 10 minutes, then turn out onto a wire rack to cool completely. Once cool, store at room temperature lightly covered for up to 3 days.