Step 1: Preheat your oven to 350°F (175°C) and grease a 9x5 inch loaf pan with butter or non-stick spray. Line the bottom with parchment paper for easy removal.
Step 2: In a medium bowl, whisk together the flour, baking soda, baking powder, salt, cinnamon, ginger, and nutmeg until well combined.
Step 3: In a large bowl, whisk the sweet potato puree, maple syrup, oil, eggs, brown sugar, and vanilla extract until the mixture is smooth and the sugar has dissolved.
Step 4: Gradually add the dry ingredients to the wet ingredients. Use a spatula to fold the mixture together gently just until no streaks of flour remain. Do not overmix.
Step 5: Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Step 6: Bake for 55-65 minutes, or until a wooden skewer inserted into the center comes out clean or with just a few moist crumbs.
Step 7: Remove from the oven and let the bread cool in the pan for 10 minutes. Then, transfer to a wire rack to cool completely before slicing.