For extra moisture, use finely shredded zucchini and do not blot it dry. You can add 3/4 cup of chopped walnuts, pecans, or chocolate chips to the batter. To make muffins instead, bake at 350°F (177°C) for 20–22 minutes. Bread stays fresh covered at room temperature for 3–4 days or refrigerated for up to 1 week.