Making Lemon Zucchini Sheet Cake is a straightforward process. Just follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch sheet pan.
2. Mix Dry Ingredients: In a bowl, whisk together the flour, granulated sugar, baking powder, baking soda, salt, and ground cinnamon.
3. Combine Wet Ingredients: In another bowl, mix together the vegetable oil, eggs, grated zucchini, lemon zest, lemon juice, and vanilla extract until well combined.
4. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Be careful not to overmix.
5. Pour into Pan: Pour the batter into the prepared sheet pan, spreading it evenly.
6. Bake: Place the pan in the preheated oven and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
7. Cool: Once baked, remove from the oven and let the cake cool in the pan for 15-20 minutes before transferring it to a wire rack to cool completely.
8. Optional Glaze: If desired, you can make a simple lemon glaze by mixing powdered sugar with lemon juice and drizzling it over the cooled cake.

These steps will help you create a delicious Lemon Zucchini Sheet Cake that is sure to impress!