Preheat the oven to 350 degrees. Spray a 9x5-inch loaf pan with cooking spray. Set aside.
In a medium-sized bowl, whisk the flour, baking soda, baking powder, salt, cinnamon, and nutmeg together. Set aside.
Add the wet ingredients to the dry, and mix until things are just combined. Add the coconut and mix until just combined.
Pour the batter into the prepared loaf pan, smoothing the top with a spatula as needed. Sprinkle the turbinado sugar over the batter in an even layer, if desired.
Bake for 45-55 minutes, or until a knife/toothpick comes out clean when inserted into the center. Allow the bread to cool for 10 minutes in the pan before removing it to a wire rack to finish cooling completely.