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Buttery Cinnamon Zucchini Crumb Cake


  • Author: Sarah White
  • Total Time: 1h
  • Yield: 9 servings 1x
  • Diet: Vegetarian

Description

A moist, buttery zucchini cake topped with a crunchy cinnamon crumb. Perfect for breakfast, brunch, or dessert with coffee.


Ingredients

Scale
  • 1½ cups all-purpose flour

  • 1 tsp baking powder

  • ½ tsp baking soda

  • ½ tsp salt

  • 1 tsp ground cinnamon

  • ½ cup unsalted butter, softened

  • ½ cup granulated sugar

  • ½ cup brown sugar, packed

  • 2 large eggs

  • 1 tsp vanilla extract

  • 1 cup shredded zucchini, excess liquid squeezed out

  • ½ cup sour cream or Greek yogurt

  • ½ cup all-purpose flour (for topping)

  • ½ cup brown sugar (for topping)

  • 1 tsp cinnamon (for topping)

  • ¼ cup cold unsalted butter, cubed (for topping)

  • ½ cup powdered sugar (optional glaze)

  • 12 tbsp milk (optional glaze)

  • ½ tsp vanilla extract (optional glaze)


Instructions

  1. Preheat oven to 350°F (175°C) and grease an 8×8-inch baking pan with parchment paper.

  2. Prepare the crumb topping by mixing flour, brown sugar, and cinnamon. Cut in cold butter until crumbly, then set aside.

  3. In a medium bowl, whisk flour, baking powder, baking soda, salt, and cinnamon.

  4. In a large bowl, cream softened butter with granulated sugar and brown sugar until light and fluffy.

  5. Beat in eggs one at a time, then add vanilla extract.

  6. Fold in the shredded zucchini and sour cream or yogurt until well combined.

  7. Gradually add the dry ingredients to the wet mixture, stirring just until combined.

  8. Pour the batter into the prepared pan and spread evenly. Sprinkle crumb topping over the surface.

  9. Bake for 35–40 minutes or until a toothpick inserted in the center comes out clean.

  10. Cool slightly before drizzling with optional glaze made from powdered sugar, milk, and vanilla.

Notes

Store at room temperature in an airtight container for up to 3 days or refrigerate for 5 days. Freeze slices for up to 2 months. Delicious warm with coffee or tea.

  • Prep Time: 20 min
  • Cook Time: 40 min
  • Category: Dessert
  • Method: Baking
  • Cuisine: American