Chocolate Zucchini Cake

It’s been a few years since I added this Chocolate Zucchini Cake to the blog, and I thought it would be a good time to update it. This fudgy dessert is a chocolate lovers dream.

A piece of chocolate zucchini cake on a white plate with a fork cutting through the cake.

Zucchini Cake

This zucchini cake recipe was given to me by a childhood friend’s mom. I have delicious memories of eating this cake at their dining room table while in elementary school. My mom made it a few times as well because it was one of my favorite desserts (plus it was super easy).

Chocolate Zucchini Cake in a baking pan lined with parchment paper, fresh out of the oven.
I still remember being told that there was zucchini in this recipe. I thought it was the strangest thing I have ever heard. I was suspicious and not sure if I should even try it (although at the time, I never even tried zucchini) I had no idea what to expect. Spoiler alert: it’s delicious.

That was my first experience with zucchini in baked goods, since then I have added shredded zucchini to waffles, muffins, and cakes. It’s my way of making myself feel better about all the sugar.

A close up shot of chocolate zucchini cake with chocolate chips sitting on top.

Helpful tools for making this zucchini cake:

Chocolate Zucchini Cake

Chocolate Zucchini cake with chocolate chips on top of the cake sitting on a white plate.

This Chocolate Zucchini Cake recipe is a delicious alternative to traditional chocolate cake. Trust me, you need to try it.

TBK’s Pro Tip: This recipe asks for sour milk (or buttermilk) if you don’t have any on hand you can make your own. Add 1/2 tablespoon of vinegar to your milk and let sit for 5 minutes.

Chocolate Zucchini Cake - this fudgy dessert is a chocolate lovers dream. The zucchini keeps this recipe soft and the chocolate makes it yummy.
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2.92 from 12 votes

Chocolate Zucchini Cake

This zucchini cake is a chocolate lovers dream. The zucchini keeps this recipe soft and the chocolate makes it yummy.
Course Dessert
Cuisine American
Keyword chocolate zucchini cake, zucchini bread, zucchini cake
Prep Time 5 minutes
Cook Time 50 minutes
Total Time 55 minutes
Servings 12
Calories 404kcal


  • 1/2 cup butter
  • 1/2 cup canola oil
  • 1 1/2 cup sugar
  • 2 eggs
  • 1 tsp vanilla
  • 1/2 cup sour milk milk with 1/2 tbsp vinegar, let sit for five minutes
  • 2 1/2 cups flour
  • 2 cups grated zucchini
  • 6 tbsps cocoa
  • 1/2 tsp salt
  • 1/2 tsp  cinnamon
  • 1 tsp of each: baking powder and baking soda
  • Chocolate chips to top


 Preheat the oven to 350°

  • Cream together butter, oil, and sugar. Then add eggs and vanilla.
  • Add the sour milk and beat well. Sift in the flour and the zucchini. Mix until incorporated.
  • Add the rest of the ingredients. Mix well.
  • Pour the batter in a greased 9 x 13 pan, bake for 50 minutes. Sprinkle with chocolate chips when still hot out of the oven.
  • This cake is best served warm, but it's good anytime.


Serving: 1g | Calories: 404kcal | Carbohydrates: 51.4g | Protein: 6g | Fat: 21.1g | Saturated Fat: 7.5g | Cholesterol: 51.5mg | Sodium: 115.3mg | Fiber: 3.9g | Sugar: 31g
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Overhead view of chocolate zucchini cake that is fresh out of the oven.

Do you use zucchini in your baking? If so, tell me your favorite baked goods to add the squash to.

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2 comments on “Chocolate Zucchini Cake”

  1. I realize many swear by canola oil, but I have personal friends who are allergic it the stuff. Just put in vegetable oil, and be done with it. Then you as cook have the option to use what you want.

  2. ke to create two new (to me anyway) dessert dishes. First is a combination carrot and zucchini bread/cake but I don’t have the first idea where or how to start. The other idea I have is to combine shredded carrots and/or zucchini with brownie mix and see what happens. Has anyone thought about either of these ideas in the past and also been stummped?

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