Description
Indulge in the rich, velvety decadence of this dark chocolate sheet cake topped with luscious dark chocolate frosting. Perfectly moist and deeply chocolaty, it’s an irresistible dessert for birthdays, potlucks, or anytime you’re craving a truly satisfying chocolate treat!
Ingredients
Scale
- For the cake:
- 1 cup unsalted butter
- 1 cup water
- 1/2 cup cocoa powder
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 2 large eggs
- 1/2 cup sour cream
- 1 teaspoon vanilla extract
- For the frosting:
- 1/2 cup unsalted butter, softened
- 2/3 cup cocoa powder
- 3 cups powdered sugar
- 1/3 cup milk
- 1 teaspoon vanilla extract
- Pinch of salt
Instructions
- Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
- In a saucepan, combine butter and water. Bring to a boil, then remove from heat and whisk in cocoa powder until smooth. Let it cool slightly.
- In a large bowl, whisk together flour, sugar, baking soda, and salt.
- Beat the eggs, sour cream, and vanilla extract into the cooled cocoa mixture until well combined.
- Gradually add the cocoa mixture to the dry ingredients, stirring until smooth.
- Pour the batter into the prepared baking pan and spread evenly.
- Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean. Let the cake cool completely on a wire rack.
- For the frosting, beat together softened butter and cocoa powder until smooth.
- Gradually add powdered sugar, milk, vanilla extract, and salt, beating until creamy and fluffy.
- Spread the frosting evenly over the cooled cake before slicing and serving.
Notes
- Use high-quality dark cocoa powder for a deeper chocolate flavor.
- Make sure the cocoa mixture is only slightly warm before adding eggs to prevent curdling.
- For an extra decadent touch, sprinkle chocolate shavings or mini chocolate chips on top of the frosting.
- Store covered at room temperature for up to 3 days or refrigerate for longer freshness.
- Prep Time: 30 mins
- Cook Time: 30 mins
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice (based on 16 servings)
- Calories: 390 kcal
- Sugar: 38 g
- Sodium: 220 mg
- Fat: 19 g
- Saturated Fat: 11 g
- Unsaturated Fat: 7 g
- Trans Fat: 0 g
- Carbohydrates: 55 g
- Fiber: 3 g
- Protein: 4 g
- Cholesterol: 60 mg
Keywords: dark chocolate sheet cake, chocolate dessert, homemade chocolate cake, easy chocolate cake, rich chocolate frosting, moist chocolate cake, potluck cake, birthday chocolate cake