Easy Chocolate Sheet Cake with Rich Fudgy Frosting

This classic chocolate sheet cake is the ultimate crowd-pleasing dessert that comes together in just one pan! Perfect for busy weeknights, family gatherings, or last-minute potluck contributions, this moist and tender cake topped with decadent fudgy frosting will become your go-to recipe for any occasion. The best part? It requires minimal effort but delivers maximum flavor that both kids and adults adore.

If you're looking for more simple dessert ideas that wow a crowd, our chewy oatmeal cookies are another family favorite that's easy to whip up.

Ingredients

For the Cake:

• 2 cups all-purpose flour
• 2 cups granulated sugar
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup unsalted butter
• 1 cup water
• 1/4 cup cocoa powder
• 2 large eggs
• 1/2 cup buttermilk
• 1 teaspoon vanilla extract

For the Fudgy Frosting:

• 1/2 cup unsalted butter
• 1/4 cup 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

Step 1: Preheat your oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan or line it with parchment paper.

Step 2: In a large mixing bowl, whisk together the flour, sugar, baking soda, and salt. Set aside.

Step 3: In a medium saucepan, combine the butter, water, and cocoa powder. Bring to a boil over medium heat, stirring constantly. Remove from heat and pour over the dry ingredients. Mix well until combined.

Step 4: In a separate small bowl, beat the eggs with buttermilk and vanilla extract. Add this mixture to the chocolate batter and stir until smooth and well incorporated.

Step 5: Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.

Step 6: While the cake is baking, prepare the frosting. In a medium saucepan, combine butter, cocoa powder, and milk. Bring to a boil, then remove from heat. Whisk in vanilla extract and gradually add powdered sugar, beating until smooth and creamy. Stir in nuts if using.

Step 7: Pour the warm frosting over the hot cake as soon as it comes out of the oven. Spread evenly with a spatula. Allow the cake to cool completely before slicing and serving.

Expert Tips

For the perfect texture: Make sure to measure your flour correctly by spooning it into the measuring cup and leveling it off. Too much flour can make the cake dry.

Buttermilk substitute: If you don't have buttermilk, you can make your own by adding 1 tablespoon of lemon juice or vinegar to 1 cup of milk and letting it sit for 5 minutes.

Frosting consistency: The frosting should be pourable but thick enough to set on the cake. If it's too thick, add a teaspoon of milk at a time until you reach the right consistency.

Storage: This cake stays moist for days when stored covered at room temperature. For longer storage, you can refrigerate it for up to a week.

For more simple baking recipes that are perfect for family gatherings, check out our classic banana bread that's always a hit with everyone.

Frequently Asked Questions

Can I make this cake ahead of time? Absolutely! This cake actually tastes even better the next day as the flavors have more time to meld together.

Can I freeze chocolate sheet cake? Yes, you can freeze the unfrosted cake for up to 3 months. Wrap it tightly in plastic wrap and then aluminum foil. Thaw at room temperature before frosting.

What can I use instead of nuts in the frosting? You can omit the nuts entirely or substitute with shredded coconut, chocolate chips, or leave it plain for a smooth frosting.

How do I know when the cake is done baking? The cake is done when a toothpick inserted into the center comes out clean or with a few moist crumbs attached.

If you enjoyed this easy dessert recipe, you might also love our flavorful turkey burger patties for a delicious main course option that's perfect for family dinners.