Chocolate Zucchini Sheet Cake

Highlighted under: Pastry & Sweets Corner

This Chocolate Zucchini Sheet Cake is a deliciously moist dessert that beautifully combines the richness of chocolate with the subtle sweetness of zucchini. Perfect for any occasion!

Ethan

Created by

Ethan

Last updated on 2025-12-20T11:25:49.028Z

This Chocolate Zucchini Sheet Cake is not just a treat for chocolate lovers; it's also a clever way to sneak in some veggies. The grated zucchini keeps the cake moist and adds a subtle sweetness that pairs perfectly with rich cocoa. This cake is ideal for parties, potlucks, or simply enjoying at home with a cup of coffee!

Why You'll Love This Recipe

  • Rich chocolate flavor paired with fresh zucchini
  • Moist and tender crumb that stays fresh for days
  • Easy to make and perfect for sharing

A Unique Twist on Dessert

This Chocolate Zucchini Sheet Cake is not just a delicious dessert; it's a clever way to incorporate vegetables into your sweets. Zucchini adds moisture and a subtle sweetness that perfectly complements the rich chocolate flavor. This cake is a fantastic option for those who might be hesitant to eat their veggies, as the zucchini is practically undetectable in the final product. Your friends and family will be none the wiser, enjoying a tasty treat while unknowingly getting a serving of vegetables.

The use of zucchini in baking has gained popularity due to its ability to enhance the texture of cakes and muffins. When baked, zucchini breaks down, making the cake incredibly moist without adding any noticeable flavor. This recipe is perfect for using up any surplus zucchini from your garden or local farmer's market. It's a win-win situation: you get a decadent dessert and a way to reduce food waste!

Perfect for Any Occasion

Whether you're celebrating a birthday, hosting a potluck, or simply craving something sweet, this Chocolate Zucchini Sheet Cake is the ideal choice. Its generous size makes it perfect for feeding a crowd, and its rich flavor will impress even the most discerning chocolate lovers. Plus, since it's a sheet cake, it's easy to cut into squares and serve, making it a convenient option for gatherings.

This cake is also an excellent option for meal prep. You can make it ahead of time, and it stays fresh for several days when stored properly. Simply cover it with plastic wrap or foil, and it will remain moist and delicious. Slice it into squares and pack them for lunch or an afternoon snack, ensuring you have a sweet treat ready whenever you need it.

Tips for Success

To ensure your Chocolate Zucchini Sheet Cake turns out perfectly, make sure to grate your zucchini finely. This allows it to blend seamlessly into the batter, providing moisture without adding any noticeable texture. Additionally, gently folding the wet ingredients into the dry ingredients will help maintain the cake's light and tender crumb.

If you're looking to elevate this cake further, consider adding chocolate chips or nuts to the batter. These additions can enhance the texture and flavor, making each bite even more enjoyable. Just be mindful not to overload the batter, as this can affect the cake's rise and overall structure.

Ingredients

For the Cake

  • 1 ½ cups all-purpose flour
  • 1 cup granulated sugar
  • ½ cup unsweetened cocoa powder
  • 1 tsp baking soda
  • ½ tsp baking powder
  • ½ tsp salt
  • 1 cup grated zucchini (about 1 medium zucchini)
  • ½ cup vegetable oil
  • 2 large eggs
  • 1 tsp vanilla extract

For the Frosting

  • ½ cup unsalted butter, softened
  • 2 cups powdered sugar
  • ¼ cup unsweetened cocoa powder
  • 2-3 tbsp milk
  • 1 tsp vanilla extract

Make sure to wash and grate the zucchini before starting your cake. It can be a great way to use up extra zucchini from your garden!

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Mix Dry Ingredients

In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt.

Combine Wet Ingredients

In another bowl, combine the grated zucchini, vegetable oil, eggs, and vanilla extract. Mix until well combined.

Combine Mixtures

Add the wet ingredients to the dry ingredients and mix until just combined. Do not overmix.

Bake the Cake

Pour the batter into the prepared baking pan and smooth the top. Bake for 30 minutes or until a toothpick inserted in the center comes out clean.

Prepare the Frosting

While the cake is cooling, make the frosting by beating together the softened butter, powdered sugar, cocoa powder, milk, and vanilla extract until smooth and creamy.

Frost the Cake

Once the cake has cooled completely, spread the frosting evenly over the top.

Serve and Enjoy

Cut into squares and serve. Enjoy your delicious Chocolate Zucchini Sheet Cake!

This cake is best enjoyed fresh but can be stored in an airtight container at room temperature for up to three days.

Storing Your Cake

Proper storage is key to maintaining the freshness of your Chocolate Zucchini Sheet Cake. To keep it soft and moist, store it in an airtight container at room temperature for up to three days. If you need to keep it longer, consider refrigerating it. Just be sure to cover it well to prevent it from drying out.

For longer storage, you can freeze the cake. Wrap it tightly in plastic wrap and then in aluminum foil to prevent freezer burn. It can be kept in the freezer for up to three months. When you're ready to enjoy it, simply thaw it in the refrigerator overnight and bring it to room temperature before serving.

Variations to Try

Feel free to experiment with this recipe by adding different flavorings or mix-ins. A dash of cinnamon or espresso powder can enhance the chocolate flavor even more. Alternatively, consider substituting half of the vegetable oil with applesauce for a lighter version that still retains moisture.

For a fun twist, you might also try adding a layer of cream cheese frosting instead of the chocolate frosting. The tangy cream cheese pairs beautifully with the rich chocolate cake and adds a delightful contrast in flavor. Whichever variation you choose, this recipe provides a great base for creativity!

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Questions About Recipes

→ Can I use frozen zucchini for this recipe?

Yes, you can use frozen zucchini, but make sure to thaw and drain excess moisture before using.

→ How do I store leftovers?

Store any leftover cake in an airtight container at room temperature for up to three days.

→ Can I substitute the oil with applesauce?

Yes, you can substitute half of the oil with unsweetened applesauce for a lighter version.

→ What can I use instead of eggs?

You can use flax eggs or unsweetened applesauce as an egg substitute in this recipe.

Chocolate Zucchini Sheet Cake

This Chocolate Zucchini Sheet Cake is a deliciously moist dessert that beautifully combines the richness of chocolate with the subtle sweetness of zucchini. Perfect for any occasion!

Prep Time20 minutes
Cooking Duration30 minutes
Overall Time50 minutes

Created by: Ethan

Recipe Type: Pastry & Sweets Corner

Skill Level: Easy

Final Quantity: 12 servings

What You'll Need

For the Cake

  1. 1 ½ cups all-purpose flour
  2. 1 cup granulated sugar
  3. ½ cup unsweetened cocoa powder
  4. 1 tsp baking soda
  5. ½ tsp baking powder
  6. ½ tsp salt
  7. 1 cup grated zucchini (about 1 medium zucchini)
  8. ½ cup vegetable oil
  9. 2 large eggs
  10. 1 tsp vanilla extract

For the Frosting

  1. ½ cup unsalted butter, softened
  2. 2 cups powdered sugar
  3. ¼ cup unsweetened cocoa powder
  4. 2-3 tbsp milk
  5. 1 tsp vanilla extract

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Step 02

In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt.

Step 03

In another bowl, combine the grated zucchini, vegetable oil, eggs, and vanilla extract. Mix until well combined.

Step 04

Add the wet ingredients to the dry ingredients and mix until just combined. Do not overmix.

Step 05

Pour the batter into the prepared baking pan and smooth the top. Bake for 30 minutes or until a toothpick inserted in the center comes out clean.

Step 06

While the cake is cooling, make the frosting by beating together the softened butter, powdered sugar, cocoa powder, milk, and vanilla extract until smooth and creamy.

Step 07

Once the cake has cooled completely, spread the frosting evenly over the top.

Step 08

Cut into squares and serve. Enjoy your delicious Chocolate Zucchini Sheet Cake!

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g