In a small mixing bowl, whisk together the flour, baking powder, soda, salt, cinnamon, and nutmeg. Set aside.
In a large bowl, whisk the brown sugar, buttermilk, melted butter, eggs, and vanilla. Add the zucchini, then the dry ingredients. Stir gently till just combined.
Cook till lightly browned on a medium hot skillet that has been oiled. Serve with cinnamon syrup.