In a loaf pan, combine all dry ingredients. Whisk maple syrup, oil and water together in a separate bowl. Add mixture to the dry ingredients and combine until everything is completely soaked and dough becomes very thick, adding 1-2 teaspoons water if dough becomes too thick to stir. Smooth top and let sit at room temperature for at least 2 hours or overnight.
Bake bread for 20 minutes, then remove from loaf pan: place it upside down directly on a rack and bake for another 30-40 minutes (it should sound hollow when tapped). Let cool before slicing.