Storage: Store cooled muffins in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to a week. They can also be frozen for longer storage.
Substitutions: You can substitute the oil with melted coconut oil or applesauce for a healthier option. Use 1/4 cup of chopped walnuts or pecans instead of raisins for a nutty crunch.
Tips: Ensure zucchini is well-drained after shredding to prevent soggy muffins. Squeeze out excess moisture with a clean kitchen towel if necessary.