Follow these step-by-step instructions to bake your perfect zucchini bread:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan or line it with parchment paper for easy removal.
2. Prepare the Zucchini: Wash the zucchini thoroughly and trim the ends. Grate the zucchini using a box grater or a food processor. You do not need to peel the zucchini. Measure 2 cups of grated zucchini and set aside.
3. Mix Dry Ingredients: In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and nutmeg until well combined.
4. Beat Wet Ingredients: In a separate bowl, beat the eggs until frothy. Add the granulated sugar, brown sugar, oil, and vanilla extract. Mix until smooth and well-blended.
5. Combine Ingredients: Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined. Be careful not to overmix, as this can lead to a dense bread.
6. Fold in Zucchini and Add-ins: Gently fold in the grated zucchini along with any optional add-ins like nuts, raisins, or chocolate chips.
7. Pour into Pan: Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
8. Bake: Place the pan in the preheated oven and bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
9. Cool: Allow the bread to cool in the pan for about 10 minutes. Then, remove it from the pan and transfer it to a wire rack to cool completely.