For best results, use silicone muffin liners. Paper liners or metal tins may cause the muffins to stick. Ensure the zucchini is well shredded and excess moisture is squeezed out to prevent soggy muffins. The resting period allows the flours to fully absorb the wet ingredients, resulting in a better texture. Store cooled muffins in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.