Chocolate Sheet Cake

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This classic chocolate sheet cake is always a hit at parties! Supremely moist, heavy on the chocolate, and frosted in a silky chocolate fudge frosting.

Prep Time 30

Cook Time 30

Total Time 1

Servings servings

Calories 255kcal

Ingredients

Chocolate Sheet Cake

1-1/2 cups granulated sugar
3/4 cup packed brown sugar
3 large eggs
1/2 cup vegetable oil
1/3 cup sour cream
1 cup buttermilk
1-1/2 teaspoons vanilla extract
2 cups all-purpose flour (spooned and leveled)
1 cup unsweetened cocoa powder
1-1/2 teaspoons baking powder
1-1/2 teaspoons baking soda
1/2 teaspoon kosher salt
1 cup hot brewed coffee

Chocolate Fudge Frosting

1-1/2 cups granulated sugar
5 tablespoons unsalted butter
1/2 cup 2% or skim milk
2 tablespoons unsweetened cocoa powder
5 oz bittersweet chocolate, finely chopped
1-1/2 teaspoons vanilla extract
Chocolate shavings for topping

Instructions

Chocolate Sheet Cake

Preheat oven to 350F. Line a 13 x 18 x 1-inch sheet pan with parchment paper and set aside.
In a large bowl, whisk both sugars, eggs, oil, sour cream, buttermilk, and vanilla until smooth.
In a separate bowl, whisk flour, cocoa powder, baking powder, baking soda, and salt. Fold half of flour mixture and half of hot coffee into sugar mixture and repeat adding until batter is just combined.
Scrape batter into prepared pan and smooth top. Bake cake at 350F 25-30 minutes until a toothpick inserted in center of cake comes out with moist crumbs sticking to it. Allow cake to cool completely on a wire cooling rack.

Chocolate Fudge Frosting

Combine sugar, butter, milk, and cocoa powder in a small saucepan and bring to a boil over medium heat. Allow to boil 1 minute then remove from heat and fold in chocolate and vanilla until chocolate is melted.
Allow frosting to cool 15 minutes at room temperature to thicken a bit. Pour frosting over cooled cake and spread into an even layer. Top cake with chocolate shavings for serving and cut into slices. Enjoy!

Notes

Storing Instructions

Store cake in an airtight container at room temperature up to 4 days.

Nutrition