Preheat the oven to 350°. Grease a muffin tin with nonstick cooking spray. In a large mixing bowl, combine both kinds of flour, oats, baking soda, baking powder, cinnamon, nutmeg and salt. In a separate bowl, whisk together the greek yogurt, beaten egg, brown sugar, coconut oil, applesauce, mashed bananas and the vanilla extract. Mix the wet and dry ingredients together. Be careful not to over mix! Fold in the shredded zucchini with a rubber spatula. Fill a muffin tin ¾ths of the way full. Bake for 45-55 minutes or until a toothpick comes out clean.