Zucchini Cake With Brown Sugar Icing

Zucchini Cake With Brown Sugar Icing tastes like a moist spice cake with a buttery caramel-style glaze that sets into a thin, fudge-like layer. It suits anyone who loves cozy bakes, needs to use extra garden zucchini, and wants dessert on the table in about 1 hour 45 minutes. I baked it after my neighbor handed me a zucchini the size of a baseball bat, and it turned out like a bake-sale winner.

Why Zucchini Cake With Brown Sugar Icing Is Worth It

Zucchini Cake With Brown Sugar Icing gives you tender crumb, warm cinnamon, and a rich brown sugar glaze that melts into every slice. The zucchini keeps the cake super moist without strong veggie flavor. You get a crowd-pleasing dessert with simple pantry ingredients and minimal fuss.

The brown sugar icing tastes like old-school fudge icing and sets as it cools. You pour it warm over the cake so it drips into the top layer and creates a thin candy shell. That contrast makes each bite soft inside and slightly crackly on top.

Ingredients You Need

• All-purpose flour, 2 cups, spooned and leveled
  • Bob’s Red Mill or King Arthur both work.
• Baking powder, 1 teaspoon
• Baking soda, 1 teaspoon
• Fine sea salt, 1 teaspoon
• Ground cinnamon, 2 teaspoons
  • Add 1/4 teaspoon nutmeg or cardamom if you like a bakery-style vibe.
• Large eggs, 2
• Granulated sugar, 3/4 cup
• Light brown sugar, 1/2 cup, packed
• Neutral oil, 3/4 cup
  • Use avocado, canola, or light olive oil.
• Plain Greek yogurt or sour cream, 1/2 cup
  • Use whole milk yogurt for best texture.
• Vanilla extract, 2 teaspoons
• Zucchini, 2 packed cups finely shredded, lightly drained
  • No need to peel. Pat with paper towels, but do not wring dry.
• Optional mix-ins: chopped walnuts or pecans, 1/2 cup, or mini chocolate chips, 1/2 cup

Brown Sugar Icing

• Unsalted butter, 1/2 cup, cut into pieces
• Light brown sugar, 1 cup, packed
• Whole milk or evaporated milk, 1/3 cup
  • Dairy-free option: use full-fat coconut milk from a can.
• Pinch of fine sea salt
• Vanilla extract, 1 teaspoon
• Powdered sugar, 1 to 1 1/2 cups, sifted for the smoothest finish
  • Domino or C&H dissolves cleanly.

Equipment

• 9 by 13 inch metal baking pan, parchment, and nonstick spray
• Box grater or food processor with shredding disc
• Large bowl, medium bowl, and whisk or a hand mixer
• Small saucepan and heatproof spatula
• Cooling rack

Quick Tips & substitutions

• Spoon and level flour so you do not pack the cup and dry out the cake.
• Do not squeeze the zucchini dry. Lightly blot it so the cake stays moist.
• Swap yogurt with buttermilk, same amount.
• Use 1 to 1 gluten-free baking flour, same amount, for a gluten-free version.
• Make it dairy-free with oil, dairy-free yogurt, and coconut milk in the icing.
• Adjust icing thickness by adding milk to loosen or powdered sugar to thicken.
• For extra flavor, add orange zest or a pinch of ground ginger to the batter.
• Test for doneness when a toothpick comes out clean or with a few moist crumbs.
• Cool the cake 20 to 30 minutes before icing so the glaze sets, not soaks completely.
• Stir the icing off heat before adding powdered sugar to avoid lumps.

How to Make Zucchini Cake With Brown Sugar Icing

• Prep time: 20 minutes
• Cook time: 35 minutes
• Total time: about 1 hour 45 minutes, including cooling and icing

1. Heat the oven to 350 degrees F. Line a 9 by 13 pan with parchment and spray it.
2. Shred the zucchini on the fine holes of a box grater. Lightly blot with paper towels so it feels damp, not dripping.
3. In a medium bowl, whisk flour, baking powder, baking soda, salt, and cinnamon. If using nutmeg or cardamom, whisk it in now.
4. In a large bowl, whisk eggs, granulated sugar, brown sugar, oil, yogurt, and vanilla until smooth and slightly thick.
5. Add the dry ingredients to the wet ingredients. Whisk just until the flour disappears and the batter looks smooth.
6. Fold in the shredded zucchini and any nuts or chocolate chips. Do not overmix.
7. Pour the batter into the pan and smooth the top. Bake 32 to 36 minutes until the center springs back and a toothpick shows a few moist crumbs.
8. Set the pan on a rack and cool 20 to 30 minutes. The cake should feel warm but not hot.
9. Start the icing. In a small saucepan over medium heat, melt the butter, then whisk in brown sugar and salt. Cook, whisking, until the mixture bubbles and looks glossy, about 2 minutes.
10. Whisk in the milk and bring it back to a gentle bubble for 1 minute. Take the pan off the heat and whisk in vanilla.
11. Sift in 1 cup powdered sugar and whisk until smooth and pourable. Add more powdered sugar if you want a thicker, fudge-like finish.
12. Pour the icing over the warm cake and spread quickly. Let it set 20 to 30 minutes before slicing.

Simple Variations

• Chocolate chip zucchini cake: fold in 1 cup mini chips and skip the nuts.
• Lemon spice version: add 1 tablespoon lemon zest to the batter and 1 teaspoon to the icing.
• Maple twist: replace half the brown sugar in the icing with pure maple sugar and use maple extract instead of vanilla.
• Nutty crunch: toast walnuts or pecans before folding them in for extra depth.

Ways to Serve Zucchini Cake

• Slice warm with a scoop of vanilla ice cream.
• Serve chilled for a firmer icing and clean slices.
• Add a dollop of lightly sweetened whipped cream and fresh berries.
• Pair with hot coffee, cold brew, or spiced chai.

Storage

Cover the pan and keep the cake at room temperature for 2 days. For longer storage, refrigerate it up to 5 days and bring slices to room temp so the icing softens slightly. Freeze individual slices, well wrapped, for up to 2 months and thaw on the counter. Keep the cake flat in the fridge so the icing stays smooth.

Ally Sanders

Zucchini Cake With Brown Sugar Icing

A moist and flavorful zucchini cake topped with a rich brown sugar icing, perfect for dessert or a sweet snack.

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Prep Time 20 minutes mins

Cook Time 40 minutes mins

Total Time 1 hour hr

Servings: 8

Course: Dessert

Cuisine: American

Ingredients

  

• 2 cups grated zucchini
• 3 cups all-purpose flour
• 1 tablespoon ground cinnamon
• 1/2 teaspoon ground nutmeg
• 1 1/2 teaspoons baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 1/4 cups granulated sugar
• 1/2 cup vegetable oil
• 1 cup brown sugar, packed
• 3 large eggs
• 2 teaspoons vanilla extract

• 1/2 cup unsalted butter
• 1 cup brown sugar, packed
• 1/4 cup milk
• 2 cups powdered sugar
• 1 teaspoon vanilla extract

Instructions

 

1. Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch pan.
2. In a large bowl, sift together the flour, cinnamon, nutmeg, baking soda, baking powder, and salt; set aside.
3. In another bowl, beat sugar, oil and brown sugar until well blended.
4. Add eggs one at a time, beating well after each addition.
5. Stir in vanilla.
6. Add flour mixture alternately with grated zucchini.
7. Pour batter into prepared pan.
8. Bake in preheated oven until a toothpick inserted in center comes out clean, about 40 minutes.
9. Cool completely in pan on a wire rack.

1. In a saucepan, melt butter over medium heat.
2. Add brown sugar and milk, stirring constantly, and bring to a boil.
3. Remove from heat and gradually stir in powdered sugar and vanilla extract.
4. Beat until smooth and spreadable.
5. Spread over cooled cake.

Notes

Ensure the zucchini is well drained to avoid a soggy cake. The brown sugar icing adds a rich and sweet finishing touch. This cake is best served at room temperature.