Zucchini Sheet Cake – Creme De La Crumb

Total Time: 40 minutes

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Zucchini Sheet Cake is an unexpected twist on a classic that combines the goodness of zucchini with the sweetness of a moist, spiced sheet cake! Grated zucchini adds moisture and subtle flavor, while the creamy frosting provides the perfect balance of sweetness!

More zucchini recipes right this way! You’ll love White Chicken Enchilada Stuffed Zucchini Boats, Zucchini Bread Muffins, Chocolate Zucchini Cake, and Taco Stuffed Zucchini Boats.

zucchini sheet cake slices

Why This Recipe Works

No Fuss: This zucchini sheet cake is the definition of a no fuss dessert. It is probably the easiest cake you will ever make! Simply mix the dry ingredients with the wet ingredients, bake and voila! You’ll have an absolutely delicious zucchini cake that you can eat at any time of the day. Seriously, this cake would be just as good in the morning as it is for dessert after dinner!

Veggie Cake: I know that having veggies in a cake may sound odd, but stick with me here. The zucchini adds moisture and nutrients to this cake without making it taste like it is healthy. And if you want a sweet treat, you can top it off with the homemade creamy frosting that pairs perfectly here!


For the Cake

ingredients for zucchini sheet cake
  • Flour: All-purpose flour works great here. For a gluten-free zucchini sheet cake, use a gluten-free replacement flour!
  • Baking Soda: Baking soda helps the cake to rise and get nice and fluffy!
  • Cinnamon: Cinnamon is a warm spice that gives this cake a flavor similar to carrot cake!
  • Salt: A little bit of salt is needed to balance all the flavors.
  • Zucchini: Shredded zucchini adds moisture to this cake. Zucchini has such a mild flavor that you won’t feel like you are eating vegetables at all!
  • Brown Sugar: Brown sugar gives this cake a deeper flavor!
  • Sugar: To make sure things are nice and sweet.
  • Eggs: For structure and rise!
  • Vanilla: Vanilla extract will add extra flavor to your zucchini cake.
  • Plain Yogurt: I used fat free greek yogurt, but you can use regular plain yogurt or even substitute this with sour cream!

For the Frosting:

  • Butter: Melted butter is used to add lots of rich flavor to this zucchini sheet cake.
  • Powdered Sugar: For a sweet cream cheese frosting!
  • Cream Cheese: Cream cheese is great in frosting because it adds a slightly tangy flavor! Make sure it is room temperature!
  • Vanilla Extract: For flavor!
  • Milk: The milk will get the frosting to your desired consistency. Feel free to use more if you want it to be runnier!

Here’s How to Make It

Step by Step Instructions

first 6 steps for zucchini sheet cake recipe
  1. Preheat & Prep: Preheat the oven to 350 and grease a 12 x 17 (or similar) jelly roll pan.
  2. Measure Dry Ingredients: In a medium bowl, whisk together flour, baking soda, cinnamon and salt. (photos 1-2)
  3. Measure Wet Ingredients: In a large bowl, cream together zucchini, sugars, eggs, vanilla and greek yogurt. (photos 3-4)
  4. Combine: Add dry ingredient to wet ingredients and mix until combined. Spread batter in prepared pan. (photos 5-7)
  5. Bake: Bake for 20-25 minutes until cake springs back when gently pressed with a finger. Allow to cool. (photo 8)
  6. Make Frosting: For the frosting, cream together the butter, powdered sugar, cream cheese, vanilla and milk until smooth. Spread over cooled cake. (photos 9-12)
final six steps for zucchini sheet cake recipe

Expert Tips

  • Don’t feel the need to peel the zucchini before shredding! You can shred the zucchini as is. No need to peel it!
  • Don’t over mix the batter! Once you combine the wet and dry ingredients, make sure you don’t over mix. This can result in a tough and dense zucchini cake!
  • To store, place your zucchini bars in an airtight container in the refrigerator for up to 5 days.
  • To make these into muffins or cupcakes, follow my zucchini bread muffins recipe!
sliced sheet cake with cream cheese icing

Frequently Asked Questions

What does zucchini do in baking?

Zucchini is a mild vegetable that offers moisture in baked goods. In this zucchini sheet cake, it helps to make this cake extremely moist and even adds some hidden veggies!

Do I need to blot the zucchini before using it to remove excess moisture?

In this recipe, no. Don’t worry about blotting the zucchini to remove excess moisture, since we really want all of that moisture in the cake! There are certain zucchini recipes that you might want to do this for, but in baking recipes it is generally not needed.

piece of zucchini sheet cake on plate

More Dessert Recipes to Try

Did you make this recipe? FANTASTIC. Please rate the recipe below and be sure to tag me on social when you share a photo on social – I love seeing what you’re up to in the kitchen!

piece of zuccihni sheet cake on plate

Zucchini Sheet Cake

Zucchini Sheet Cake is an unexpected twist on a classic that combines the earthy goodness of zucchini with the sweetness of a moist sheet cake! Grated zucchini adds moisture and subtle flavor, while the creamy frosting provides the perfect balance of sweetness!