Indulgent Chocolate Sheet Cake: Easy Crowd-Pleasing Dessert

This indulgent chocolate sheet cake is everything you want in a celebration dessert – rich, moist, and incredibly easy to make. Perfect for feeding a crowd at parties, potlucks, or any gathering, this simple sheet pan dessert comes together in one bowl and delivers bakery-quality results. The fudgy chocolate icing creates the ultimate decadent treat that will have everyone asking for seconds.

Ingredients

For the Cake:

• 2 cups all-purpose flour
• 2 cups granulated sugar
• 1 cup unsweetened cocoa powder
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup vegetable oil
• 1 cup buttermilk
• 3 large eggs
• 2 teaspoons vanilla extract
• 1 cup boiling water

For the Fudgy Chocolate Icing:

• 1/2 cup unsalted butter
• 1/4 cup cocoa powder
• 6 tablespoons milk
• 4 cups powdered sugar
• 1 teaspoon vanilla extract
• 1 cup chopped walnuts or pecans (optional)

Step-by-Step Instructions

Preparing the Cake Batter

1. Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. In a large mixing bowl, whisk together flour, sugar, cocoa powder, baking soda, baking powder, and salt.
3. Add vegetable oil, buttermilk, eggs, and vanilla extract to the dry ingredients. Mix until just combined.
4. Carefully stir in the boiling water until the batter is smooth and well blended.
5. Pour the batter into the prepared pan and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.

Making the Fudgy Icing

1. While the cake is baking, prepare the icing by melting butter in a medium saucepan over medium heat.
2. Whisk in cocoa powder and milk until smooth.
3. Remove from heat and stir in powdered sugar and vanilla extract until the icing is glossy and pourable.
4. If using nuts, stir them into the icing mixture.

Assembling the Cake

1. Remove the cake from the oven and immediately pour the warm icing over the hot cake.
2. Use a spatula to spread the icing evenly across the surface.
3. Allow the cake to cool completely before cutting into squares.

Expert Tips for Perfect Chocolate Sheet Cake

Measure accurately: For consistent results, use measuring cups and spoons rather than estimating ingredients. This moist cake recipe relies on precise measurements for its perfect texture.

Don’t overmix: Mix the batter just until ingredients are combined to avoid developing too much gluten, which can make the cake tough.

Test for doneness: The cake is ready when a toothpick comes out with a few moist crumbs attached – it shouldn’t be completely clean.

Serve warm: This cake is delicious at room temperature, but serving it slightly warm enhances the chocolate flavor and fudgy texture. For more inspiration, check out this easy strawberry cake recipe for another crowd-pleasing dessert option.

FAQ

Can I make this cake ahead of time?

Absolutely! This chocolate sheet cake actually tastes better the next day as the flavors have more time to develop. Store it covered at room temperature for up to 3 days.

Can I make this cake gluten-free?

Yes, you can substitute the all-purpose flour with your favorite gluten-free flour blend. Just make sure it contains xanthan gum or add 1 teaspoon separately. For more dessert ideas, try this blueberry lemon loaf which can also be adapted for gluten-free diets.

Can I freeze chocolate sheet cake?

Yes, this cake freezes beautifully. Wrap individual slices tightly in plastic wrap and freeze for up to 3 months. Thaw at room temperature before serving.

What makes this different from Texas sheet cake?

This recipe produces a slightly thicker, more traditional sheet cake compared to the thinner Texas-style version. The icing is poured warm over the hot cake, creating that signature fudgy texture. For more chocolate dessert inspiration, explore this Texas chocolate sheet cake recipe.

Indulgent Chocolate Sheet Cake: Easy Crowd-Pleasing Dessert

This indulgent chocolate sheet cake is a rich, moist dessert perfect for feeding a crowd at parties and gatherings. The simple sheet pan dessert comes together in one bowl with fudgy chocolate icing for bakery-quality results.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 35 minutes mins

Total Time 55 minutes mins

Servings: 12 servings

Calories: 450

Ingredients Method Notes

Ingredients

  

Ingredients

• 2 cups all-purpose flour
• 2 cups granulated sugar
• 1 cup unsweetened cocoa powder
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup vegetable oil
• 1 cup buttermilk
• 3 large eggs
• 2 teaspoons vanilla extract
• 1 cup boiling water
• 1/2 cup unsalted butter
• 1/4 cup cocoa powder
• 6 tablespoons milk
• 4 cups powdered sugar
• 1 teaspoon vanilla extract
• 1 cup chopped walnuts or pecans (optional)

Method

 

Instructions

1. Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. In a large mixing bowl, whisk together flour, sugar, cocoa powder, baking soda, baking powder, and salt.
3. Add vegetable oil, buttermilk, eggs, and vanilla extract to the dry ingredients. Mix until just combined.
4. Carefully stir in the boiling water until the batter is smooth and well blended.
5. Pour the batter into the prepared pan and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
6. While the cake is baking, prepare the icing by melting butter in a medium saucepan over medium heat.
7. Whisk in cocoa powder and milk until smooth.
8. Remove from heat and stir in powdered sugar and vanilla extract until the icing is glossy and pourable.
9. If using nuts, stir them into the icing mixture.
10. Remove the cake from the oven and immediately pour the warm icing over the hot cake.
11. Use a spatula to spread the icing evenly across the surface.
12. Allow the cake to cool completely before cutting into squares.

Notes

Measure accurately with measuring cups and spoons, don’t overmix the batter, test for doneness with a toothpick (should come out with a few moist crumbs), serve slightly warm for enhanced flavor.