Preheat your oven to 350°F (175°C) and grease the loaf pan with olive oil or cooking spray.

In a large mixing bowl, whisk together whole wheat flour, baking soda, salt, ground cinnamon, and ground nutmeg.

In a separate bowl, beat together brown sugar, eggs, olive oil, and vanilla extract until smooth. Stir in the well-drained grated zucchini.

Fold the wet mixture into the dry ingredients until just combined. If using, fold in optional add-ins.

Pour the batter into the prepared loaf pan, smoothing the top with a spatula.

Bake for 45-50 minutes, or until the top is golden and a toothpick inserted comes out clean.

Remove from oven and cool in the pan for about 10 minutes before transferring to a wire rack.