Start by preheating the oven and gathering everything. Shred your zucchini finely and measure out the dry and wet ingredients separately. I always like to line my loaf pan with parchment for easy removal.
In a large bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, and nutmeg. This ensures even distribution and prevents clumps. I usually give it a quick taste of the cinnamon mix—just to smell it, of course!
In another bowl, beat the eggs lightly, then mix in oil, applesauce, sugars, and vanilla extract. Whisk until smooth. I find this step makes the batter extra moist and slightly fluffy.
Fold the shredded zucchini into the wet mixture gently. Make sure every shred is coated—it keeps the bread moist without being too wet. At this point, your kitchen starts smelling amazing.
Slowly add the dry ingredients to the wet mixture and stir just until combined. Overmixing can make the bread dense. I usually stop when I still see a few streaks of flour; it bakes into a soft texture.
Fold in the chocolate chips evenly. I like to reserve a few to sprinkle on top for that irresistible look after baking.
Pour the batter into the prepared loaf pan and smooth the top. Bake at 350°F (175°C) for 55–60 minutes, or until a toothpick comes out clean. The smell during baking is pure heaven!
Let the bread cool in the pan for 10–15 minutes, then transfer to a cooling rack. This prevents it from being too moist or falling apart. I always wait—hard to resist, but worth it!