Preheat oven to 180, fan forced. Mix all wet ingredients together. Mix all dry ingredients in a separate bowl. Finely dice the onion. Grate the zucchini and squeeze out excess liquid by pressing it into a metal sieve or squeezing it in a nut milk bag. Add wet ingredients to dry, add zucchini and onion and stir until combined. Transfer to muffin tin and cook for 18-20mins on 180 deg celsius.