Preheat oven to 350°F (177°C). Grease a 9x5 inch loaf pan with butter or parchment paper.
In a large bowl, beat the egg, sugar, oil, and vanilla until the mixture is light and fluffy.
Stir in the grated zucchini, ensuring it's evenly distributed throughout the wet base.
Fold in the dry ingredients just until combined. Do not overmix, or you'll develop too much gluten and end up with a tough loaf.
Pour the batter into the prepared pan and bake for 55–65 minutes, or until a tester comes out clean.


