Sweet Glazed Zucchini Cake with Brown Sugar Icing
This Homemade Zucchini Cake With Brown Sugar Icing is a masterclass in transforming a humble vegetable into a spectacularly moist and flavorful dessert. After extensive testing, I’ve perfected a recipe where the zucchini ensures incredible tenderness while the brown sugar icing adds a deep, caramel-like richness.
- Prep Time: 25 minutes
- Cook Time: 35 minutes
- Total Time: 1 hour
Ingredients
Scale
- 3 large eggs, beaten
- 2 cups white sugar
- 3 tsp pure vanilla extract
- 3/4 cup neutral oil (such as vegetable)
- 2 tsp baking powder
- 1 tsp baking soda
- 1 tsp table salt
- 2 tsp ground cinnamon
- 2 cups all-purpose flour
- 2 cups drained shredded zucchini
- 1/2 cup unsalted butter
- 2/3 cup packed brown sugar
- 1/4 tsp kosher salt
- 1/4 cup whole milk
- 2 1/2 cups powdered sugar
- 1 1/2 tsp vanilla essence
Instructions
- Prep the Zucchini and Oven: Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan. Shred the zucchini using a box grater, then place it in a clean kitchen towel or several layers of paper towels. Squeeze firmly to remove as much excess liquid as possible—this crucial step prevents a soggy cake batter. You should have 2 cups of firmly packed, drained zucchini.
- Combine Wet Ingredients: In a large mixing bowl, whisk together the beaten eggs, white sugar, pure vanilla extract, and neutral oil until the mixture is smooth and slightly thickened. This emulsification process, which means thoroughly blending fat and water-based ingredients, creates the base for a uniform and tender crumb.
- Mix Dry Ingredients: In a separate medium bowl, sift together the all-purpose flour, baking powder, baking soda, table salt, and ground cinnamon. Sifting aerates the flour and ensures the leavening agents are evenly distributed, which is key for an even rise. (Pro tip: Whisking them together works if you don't have a sifter).
- Form the Cake Batter: Gradually add the dry ingredient mixture to the wet ingredients, stirring with a spatula just until no large flour streaks remain. Overmixing at this stage can develop gluten and lead to a tough cake. Gently fold in the drained shredded zucchini until it is evenly distributed throughout the batter.
- Bake the Cake: Pour the batter into your prepared pan and spread it into an even layer. Bake in the preheated oven for 30-35 minutes. The cake is done when the top is golden brown, the edges pull away from the pan slightly, and a toothpick inserted into the center comes out clean or with a few moist crumbs. Allow the cake to cool completely in the pan on a wire rack before icing.
- Make the Brown Sugar Icing: While the cake cools, prepare the icing. In a medium saucepan over medium heat, melt the unsalted butter. Add the packed brown sugar and kosher salt. Cook, stirring constantly, for 2 minutes until the sugar is fully dissolved and the mixture is bubbling. Unlike a simple powdered sugar glaze, this cooking step caramelizes the brown sugar, creating a deeper flavor profile.
- Finish the Icing: Remove the saucepan from the heat and carefully stir in the whole milk. The mixture may bubble vigorously. Return the pan to low heat and cook for one more minute, stirring continuously. Remove from heat and let cool for 5-10 minutes until just warm to the touch. Gradually whisk in the powdered sugar and vanilla essence until the icing is completely smooth and pourable.
- Ice and Serve: Once the cake is completely cool, pour the warm brown sugar icing over the top. Use an offset spatula to spread it evenly to the edges. Let the icing set for at least 20 minutes before slicing. In my tests, this resting period allows the icing to firm up slightly, making for cleaner slices and a perfect, glossy finish on your Homemade Zucchini Cake.