Preheat oven to 350 degrees Fahrenheit. Grease and flour two 8x4-inch loaf pans. Set aside.
Using a fine mesh sieve, sift the flour, cinnamon, baking powder, salt, and baking soda into a bowl. Set aside.
In a separate large bowl, whisk together the sugar, eggs, oil, and vanilla until combined well. Stir in the shredded zucchini.
Fold in the dry ingredients,until just incorporated. Do not over-mix. Divide the batter evenly between the two prepared loaf pans.
Bake at 350˚F for 50-60 minutesor until a toothpick comes out clean when inserted into the center.
When done baking, cool zucchini bread in the pan on a wire rack for 30 minutes. Then remove bread from pan, and cool completely on a wire rack.
Wrap loaves in plastic wrap or place sliced bread into a zip-top bag. Store the zucchini bread at room temperature up to 3-4 days or in the refrigerator up to 7-10 days.
Notes
SUGAR - May use half granulated sugar and half brown sugar.
OIL - May use half oil and half applesauce.
ZUCCHINI - You will need 1-2 small/medium zucchinis to equal 2 cups shredded/grated. If zucchini is juicy, place it in a sieve or colander to drain excess water before using. If using over-grown zucchini, peel the skin and remove seeds before shredding.
MINI LOAVES - Bake at 350˚F for 35-40 minutes.
MUFFINS - Bake at 350˚F for 18-20 minutes.
TO FREEZE - Double wrap loaves with plastic wrap and place in a freezer-safe zip-top bag. Freeze up to 3 months. Thaw at room temperature while still wrapped.