Zucchini Crumb Cake

This spiced zucchini crumb cake is the perfect way to use up zucchini! It’s topped with a thick, buttery crumb and chopped walnuts.

Zucchini Crumb Cake | lifemadesimplebakes.com

The past two weeks have been full of flops in my kitchen. I’m not sure what’s been going on but it’s been really disappointing. This zucchini cake however, was NOT one of them. It was tender, fluffy and full of fall spices. I kind of loved everything about it, and I think you will too.

Zucchini Crumb Cake | lifemadesimplebakes.com

The batter is really easy to make, you can probably whip it up in just a few minutes. After that goes into the pan, you’ll want to make the crumb topping. Mine turned out a little on the dry side, so I remade this in muffin form and adjusted the recipe as reflected below. I kind of want to top everything with it now!! Bake the cake for 35 minutes and then check the center to see if it’s set. Give it a few extra minutes if it’s still a bit wobbly.

Zucchini Crumb Cake | lifemadesimplebakes.com

After it cools, cut it and serve it with a big glass of milk and enjoy! Happy baking!!

5.0 from 2 reviews
Zucchini Crumb Cake
Prep time
Cook time
Total time
This spiced zucchini crumb cake is the perfect way to use up zucchini! It's topped with a thick, buttery crumb and chopped walnuts.
  • 2 c. all-purpose flour
  • 1 tsp. baking powder
  • ½ tsp. baking soda
  • ½ tsp. kosher sea salt
  • 1½ tsp. ground cinnamon
  • 1 tsp. pumpkin pie spice
  • ⅓ c. sour cream
  • ½ c. granulated sugar
  • ¼ c. (4 tbsp.) unsalted butter, melted
  • 2 eggs
  • 1 tsp. vanilla extract
  • 1¼ c. shredded zucchini

  • Crumb Topping:
  • 2½ tbsp. granulated sugar
  • 2½ tbsp. brown sugar
  • ½ c. cake flour or all-purpose flour
  • ¼ tsp. ground cinnamon
  • 4 tbsp. unsalted butter, melted
  • ⅓ c. chopped walnuts
  1. Preheat oven to 350 degrees. Spray a 9x9-inch baking pan with non-stick spray or line with parchment paper; set aside.
  2. In a small mixing bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and pumpkin pie spice; set aside.
  3. In a large mixing bowl (with a hand mixer) or the bowl of a stand mixer, beat the sour cream, sugar, melted butter, eggs, and vanilla until combined. Add the zucchini and gently mix in. Slowly add the dry ingredients and mix just until combined.
  4. Spread batter into prepared pan. Combine all of the ingredients for the topping in a small mixing bowl. When large crumbs form, sprinkle the mixture over the batter. Place in the oven and bake for 35-45 minutes or until the center is set. Remove from the oven and allow to cool in the pan for 20 minutes before cutting or removing.
-You can omit the walnuts completely or swap them out for pecans!

Recipe source: adapted from Barbara Bakes