Ingredients
Equipment
Method
Bake the zucchini sheet cake
- Preheat the oven to 350°F and grease a 9x13 baking pan so the cake releases easily after baking.
- Whisk all-purpose flour, cinnamon, baking soda, baking powder, salt, and nutmeg together until evenly combined.
- Beat granulated sugar, vegetable oil, eggs, and vanilla extract until smooth and glossy.
- Stir in zucchini (grated and squeezed dry) until the batter looks evenly moistened.
- Fold the dry ingredients into the wet just until no dry streaks remain, and fold in walnuts if using.
- Pour the batter into the pan and bake at 350°F for 30–35 minutes, until a toothpick comes out clean.
Cool and frost
- Cool the cake completely for at least 30 minutes so the frosting won’t melt.
- Beat cream cheese, butter, powdered sugar, vanilla, and milk until light and fluffy with a spreadable texture.
- Spread the frosting evenly over the cooled cake, then swirl the top for a thick, decorative finish.
Notes
For best moisture, squeeze the grated zucchini very dry before adding so the crumb stays tender without getting gummy. Store covered in the refrigerator up to 4 days. Freeze unfrosted cake squares up to 2 months; thaw overnight in the fridge and frost after thawing. For a dairy-light option, use vegan cream cheese and plant-based butter in the frosting.
