Preheat the oven to 350°F (175°C) and grease a 9x5-inch loaf pan or line it with parchment paper for easy removal.
Grate the zucchini using a box grater or food processor. Place the grated zucchini in a clean kitchen towel and squeeze out excess moisture. Toast the pecans: In a dry pan over medium heat, toast the pecans for 3-5 minutes until they’re fragrant and slightly golden.Allow them to cool, then chop into smaller pieces. In a large mixing bowl, whisk together the gluten-free flour, baking soda, cinnamon, nutmeg, and salt.
In a separate bowl, whisk the eggs, maple syrup (or honey), vegetable oil, and vanilla extract together until smooth.
Add the grated zucchini to the wet ingredients, then fold in the dry ingredients until just combined.Be careful not to overmix. Fold in the toasted pecans, ensuring they’re evenly distributed throughout the batter.
Pour the batter into the prepared loaf pan, spreading it out evenly with a spatula.
Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean. If the top starts to brown too quickly, tent the loaf with foil. Allow the bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.