Preheat oven to 350° F and prepare pans. Grease, spray, or place parchment paper in either two 7-⅜ x 3-⅝ inch loaf pans or one 9x5 inch loaf pan plus one mini loaf pan. Just make sure that you do not fill your pans more than ⅔ of the way full with batter.
Peel and grate your zucchini. Let drain in a fine mesh strainer and press gently with a spoon to remove excess liquid. Set aside.
In a large bowl, whisktogether sugar, vegetable oil, eggs, vanilla, lemon zest, and lemon juice untilthe mixture is combined and smooth. In a separate bowl, combine all dryingredients and mix until combined.
Gently stir all dry ingredients into the large bowl of wet ingredients and stir just until combined. Fold in the grated zucchini.
Pour the batter into the prepared pans, not to exceed ⅔ of the way full. Bake in the preheated oven until center is firm and a tester comes out clean. Bake times will vary depending on the size of your loaf pans. Small to medium loaf pans may take around 20-30 minutes and upwards of 55-60 minutes for a large loaf pan.
Let cool completely before topping with lemon glaze, otherwise it will melt.