Chocolate Zucchini Coffee Cake With Chocolate Crumb

Tuesday, June 23, 2026
When the bumper crop of summer zucchini is overflowing a favorite Zucchini Cake recipe is this moist Chocolate Zucchini Coffee Cake with a buttery chocolate crumb topping. This cake sneaks in 3 cups of shredded zucchini but you would never know unless someone told you. A great way to eat more veggies.

A slice of Chocolate Zucchini Coffee Cake with Chocolate Crumb topping on a white plate.
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I couldn't think of a better way to bring the family back to the dinner table then this Chocolate Zucchini Coffee Cake With Chocolate Crumb it's definitely one of my favorite uses for squash because it's filled with zucchini and lots of chocolaty goodness.

Shhh...Don't tell I ate a slice for breakfast and think it's perfect for brunch or dessert and loved every bite.

It's perfectly chocolaty and super moist with a crunchy chocolate crumb.

You have to make Chocolate Zucchini Coffee Cake with Chocolate Crumb sooner then later.

It's sooooo good! 

A stainless steel mixing bowl with flour, cocoa powder, sugar and salt for chocolate crumb topping.

To make the chocolate crumb combine in a mixer: 
  • 2/3 cup All-Purpose or Whole Wheat Pastry Flour
  • 1/3 cup Cocoa Powder
  • 1 cup Granulated Sugar
  • 1/4 teaspoon Salt
Mix on low until well combined.

Butter added to Chocolate Crumb topping in a stainless steel mixing bowl.

Add 1/2 cup Cubed Butter in small pieces.

Chocolate Crumb Topping in a stainless steel bowl for Chocolate Zucchini Coffee Cake.

Mix until well combined and crumbly.

Move to a small bowl and set aside.

Brown Sugar and Butter in a stainless steel mixing bowl for Chocolate Zucchini Cake.
Cream 2/3 cup Butter and 1 1/2 cup Brown Sugar until light and fluffy.

Add 2 whole Eggs 1 at a time until well incorporated.

Chocolate Zucchini Coffee Cake batter in a stainless steel mixing bowl.

Mix in until throughly combined:
  • 2/3 cup Natural Unsweetened Cocoa Powder
  • 2 teaspoons Baking Soda
  • 1/2 teaspoon Salt
  • 1 1/2 teaspoons Vanilla 
Chocolate Zucchini Cake batter with 3 cups Shredded Zucchini and flour added in a stainless steel mixing bowl.

Add:
  • 2 1/2 cups All-Purpose or Whole Wheat Pastry Flour
  • 2/3 cup Strong Coffee
  • 1 1/2 teaspoons Apple Cider Vinegar
  • 3 cups Shredded Zucchini
Chocolate Zucchini Cake batter in a stainless steel bowl.

Mix batter until well combined.

Chocolate Zucchini Cake batter spread in a 9"x13" pan.

Butter a 9"x13" pan and line with parchment paper and butter parchment paper.

Pour chocolate zucchini cake into pan and spread evenly.

Chocolate Crumb Topping crumbled over the top of Chocolate Zucchini Cake batter in a 9"x13" pan.

Press chocolate crumb mixture between fingers and distribute evenly over the top of the cake.

Bake in a 350 degree oven for 40-50 minutes until a toothpick inserted into the center of cake comes out clean.

9"x13" Chocolate Zucchini Coffee Cake with Chocolate Crumb.

Allow cake to cool completely in pan before slicing.

A slice of Chocolate Zucchini Coffee Cake on a white plate.

I think Chocolate Zucchini Coffee Cake with Chocolate Crumb is the perfect treat for Breakfast, Brunch or Dessert and a great use for all the extra zucchini from the garden.

Other favorite recipes to use up a bumper crop of Zucchini are:

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Dessert, Brunch
American
Yield: 16
Author: Serena Bakes Simply From Scratch
Chocolate Zucchini Coffee Cake with Chocolate Crumb

Chocolate Zucchini Coffee Cake with Chocolate Crumb

A favorite Zucchini Cake recipe is this moist Chocolate Zucchini Coffee Cake with a butter chocolate crumb topping. This cake sneaks in 3 cups of shredded zucchini.

Prep time: 15 MinCook time: 50 MinTotal time: 1 H & 5 M

Ingredients

Chocolate Crumb Topping
Chocolate Zucchini Cake

Instructions

Chocolate Zucchini Coffee Cake
Chocolate Crumb Topping
Chocolate Zucchini Cake

Nutrition Facts

Calories

351

Fat

15 g

Sat. Fat

9 g

Carbs

54 g

Fiber

5 g

Net carbs

49 g

Sugar

33 g

Protein

5 g

Sodium

370 mg

Cholesterol

56 mg

The nutritional information and metric conversions are calculated automatically. I cannot guarantee the accuracy of this data. If this important to you, please verify with your favourite nutrition calculator and/or metric conversion tool.

Did you make this recipe?
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21 comments

Shelby said...

Your photo is absolutely drawing me in! I would eat this for breakfast, brunch, lunch, dinner too!!

Liz That Skinny Chick Can Bake said...

Oh, Serena, THANK YOU for giving my family an excuse to eat chocolate for breakfast! Your coffee cake looks amazing!!!!

Unknown said...

Yum, it's so rich and delicious looking! What a way to eat your veggies!!

Peanut Butter and Peppers said...

Wow! Your chocolate zucchini cake looks so rich and moist. I love this recipe!

Cooking On A Budget said...

I love the along the way photographs, nice touch. And the Chocolate Zucchini Coffeecake looks and sounds amazing.

Unknown said...

This looks amazing & love, love the chocolate crumble!

The Ninja Baker said...

The chocolate crumb is ingenious, Serena. There is something about the texture of wheat flour that adds something je ne sais quo. But I do know your whole creation looks yummy!

Unknown said...

That looks so rich and moist, great zucchini cake recipe!!

Unknown said...

Yummm, coffee cake is probably my favorite kind of cake. Love the crumb topping!

Christy @ Confessions of a Culinary Diva said...

Wow! I need this right now to keep me going the rest of the day. It looks decadent, and moist!

Joanne said...

This coffee cake looks so delicious with the crumb topping! I need to make this soon.

Erin | Well Plated said...

Best way to eat your greens EVER!

Hun.... WFD said...

OMGosh I just want to like my screen. This coffee cake is phenomenal!

Renee said...

Veggies for breakfast is a good thing, especially when they are hidden inside this lovely cake.

Mary Kirkland said...

The photos are great and that looks really good.

Simply Gourmet said...

I am drooling! Your cake looks and sounds wonderful.

Michelle said...

This looks delicious! I am bummed because zucchini season here is apparently coming to a close and I used my last two from the farmer's market tonight for zoodles. Maybe I'll get lucky and someone will have some this weekend. I know I could use one from the grocery store, but I try to stick to my CSA and the farmer's market this time of year. If you have a moment, I would love it if you would link it up with us at Foodie Fridays...our party this week is closed, but our next one starts at 9 pm Thursday night, EST. Regardless, I'm pinning this. :)

Karen said...

These looks soooo good Serena!! That crumb topping is pretty cool!!!

Sarah R said...

This is the perfect recipe for me! Crumb cake anything is awesome, and doubly so with chocolate

Unknown said...

Can you tell me why the apple cider vinegar?!

Serena Bakes Simply From Scratch said...

Hi! It causes a chemical reaction with the baking soda to make the cake fluffier. Happy Baking! -Serena

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