Preheat your oven to 350 and grease a 9x5 loaf pan (I use a coconut oil spray).
In a medium bowl, whisk together the spelt flour, baking powder, baking soda, salt, and cinnamon and set aside.
In a large bowl mash the bananas until they are close to lump-free, then stir in the coconut sugar, maple syrup, egg, coconut oil, and vanilla. Mix well.
Bit by bit, add the flour mixture, stirring well each time incorporate it. Set aside.
Squeeze the moisture out of the grated zucchini by placing it in the middle of a double layer of paper towels (or cheesecloth) and squeezing out the water over the sink. Fold the zucchini into the batter.
Pour the batter into your prepared loaf pan and bake for 45-55 minutes, checking that a toothpick in the center of the loaf comes out clean.
Cool in the pan for 15 minutes, then cool completely, on a wire rack.