Easy Chocolate Sheet Cake with Fudgy Chocolate Frosting – Crowd-Pleasing One Pan Dessert
Easy Chocolate Sheet Cake with Fudgy Chocolate Frosting
This classic chocolate sheet cake recipe delivers moist, tender chocolate cake topped with a decadent fudgy frosting that comes together in just one pan. Perfect for feeding a crowd at parties, potlucks, or family gatherings, this easy dessert requires minimal effort but delivers maximum chocolate satisfaction.
Whether you’re hosting a celebration or craving a simple weeknight treat, this crowd-pleasing sheet cake is your go-to solution. The cake bakes up light and fluffy while the rich frosting adds a deep cocoa flavor that chocolate lovers adore.
Ingredients
For the Cake:
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 1/2 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup unsalted butter
- 1 cup water
- 2 large eggs
- 1/2 cup buttermilk
- 1 teaspoon vanilla extract
For the Fudgy Frosting:
- 1/2 cup unsalted butter
- 1/4 cup unsweetened cocoa powder
- 6 tablespoons milk
- 1 teaspoon vanilla extract
- 3 1/2 cups powdered sugar
- 1 cup chopped pecans or walnuts (optional)
Step-by-Step Instructions
Prepare the Cake Batter
Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan. In a large mixing bowl, whisk together flour, sugar, cocoa powder, baking soda, and salt.
In a saucepan, melt butter with water over medium heat. Bring just to a boil, then remove from heat. Pour the hot butter mixture into the dry ingredients and stir until well combined.
Mix Wet Ingredients
In a separate bowl, whisk together eggs, buttermilk, and vanilla extract. Add this mixture to the batter and stir until smooth and well combined. The batter will be thin – this is normal for sheet cakes.
Bake the Cake
Pour the batter into the prepared pan and spread evenly. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. While the cake bakes, prepare the frosting.
Make the Fudgy Frosting
In a medium saucepan, combine butter, cocoa powder, and milk. Heat over medium heat, stirring constantly, until the butter melts and the mixture comes to a boil. Remove from heat and stir in vanilla extract.
Gradually whisk in powdered sugar until smooth. Stir in chopped nuts if using. The frosting should be pourable but thick enough to coat the back of a spoon.
Finish and Serve
Remove the cake from the oven and immediately pour the warm frosting over the hot cake, spreading it evenly with a spatula. Allow the cake to cool completely at room temperature before cutting into squares.
For best results, let the cake sit for at least an hour to allow the frosting to set properly. This moist chocolate cake keeps well covered at room temperature for up to 3 days.
Expert Tips
Perfect Texture Every Time: Don’t overmix the batter once you add the flour to avoid a tough cake. Mix just until the ingredients are combined.
Temperature Matters: The hot cake absorbs the warm frosting, creating a fudgy layer that sets up perfectly. Don’t let the cake cool before adding the frosting.
Customization Options: Add 1/2 cup chocolate chips to the batter for extra chocolate flavor, or substitute the nuts with shredded coconut in the frosting.
Storage Tips: Store covered at room temperature. For longer storage, the cake freezes well for up to 3 months. Wrap individual slices in plastic wrap before freezing.
If you love simple dessert recipes, you’ll also enjoy this easy strawberry crunch cake for a delicious fruit-based alternative.
FAQ
Can I make this cake ahead of time?
Yes! This sheet cake actually tastes better the next day as the flavors have more time to develop. Bake it up to 24 hours in advance.
Can I use a different frosting?
While the fudgy frosting is traditional, you could use cream cheese frosting or chocolate buttercream. However, the warm frosting poured over hot cake creates the signature texture.
How many people does this cake serve?
This recipe makes about 15-20 servings, making it ideal for gatherings. For smaller groups, you can halve the recipe and use an 8×8 inch pan.
Can I make this gluten-free?
Yes, substitute the all-purpose flour with a 1:1 gluten-free flour blend. The results may be slightly denser but still delicious.
Looking for more decadent chocolate desserts? Try our rich cocoa cake variations for different flavor profiles.
Easy Chocolate Sheet Cake with Fudgy Chocolate Frosting
Ingredients
Method
- Preheat oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan. Whisk together flour, sugar, cocoa powder, baking soda, and salt in a large mixing bowl.
- Melt butter with water in saucepan over medium heat until boiling, then remove from heat. Pour hot butter mixture into dry ingredients and stir until combined.
- Whisk eggs, buttermilk, and vanilla extract in separate bowl, then add to batter and stir until smooth.
- Pour batter into prepared pan and bake for 25-30 minutes until toothpick comes out clean.
- While cake bakes, make frosting: combine butter, cocoa powder, and milk in saucepan, heat until boiling while stirring, then remove from heat and stir in vanilla.
- Gradually whisk powdered sugar into frosting mixture until smooth, stir in nuts if using.
- Pour warm frosting over hot cake immediately after baking, spread evenly with spatula, and cool completely before serving.
