Old-Fashioned Chocolate Sheet Cake

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My great-great aunt made this old-fashioned chocolate sheet cake recipe, and it's been in our family for 2 generations! You can also use cream cheese or buttercream icing to make a layer cake.

Submitted by Sophie C
Updated on February 9, 2022
Recipe Placeholder Image
Prep Time:
15 mins
Cook Time:
25 mins
Additional Time:
2 hrs 5 mins
Total Time:
2 hrs 45 mins
Servings:
24
Yield:
1 10x15-inch cake
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Ingredients

Original recipe (1X) yields 24 servings

Cake:

  • 2 cups sifted cake flour

  • 2 cups white sugar

  • ½ teaspoon baking soda

  • 1 cup unsalted butter

  • 1 cup water

  • ¼ cup cocoa powder

  • 1 teaspoon vanilla extract

  • ½ cup buttermilk

  • 2 eggs

Icing:

  • ½ cup unsalted butter

  • 6 tablespoons milk

  • 4 tablespoons cocoa powder

  • 1 teaspoon vanilla extract

  • 2 cups powdered sugar

Directions

  1. Preheat the oven to 400 degrees F (200 degrees C). Grease and flour a 10x15-inch cake pan.

  2. Mix flour, sugar, and baking soda together in a large bowl; set aside.

  3. Heat butter, water, cocoa powder, and vanilla extract in a saucepan over medium heat, stirring occasionally, until smooth and just boiling. Pour over the flour mixture and stir to combine. Stir in buttermilk and eggs. Pour batter into the prepared pan.

  4. Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 20 minutes. Remove cake from the oven and cool on a wire rack for 5 minutes.

  5. Meanwhile, combine butter, milk, cocoa powder, and vanilla extract for the icing in a saucepan over medium heat. Bring to a slow boil, then stir in powdered sugar. Pour icing over the hot cake. Let sit for 2 hours before serving.

Nutrition Facts (per serving)

264 Calories
12g Fat
38g Carbs
2g Protein
Nutrition Facts
Servings Per Recipe 24
Calories 264
% Daily Value *
Total Fat 12g 16%
Saturated Fat 8g 40%
Cholesterol 45mg 15%
Sodium 40mg 2%
Total Carbohydrate 38g 14%
Dietary Fiber 1g 3%
Total Sugars 28g
Protein 2g 4%
Vitamin C 0mg 0%
Calcium 19mg 1%
Iron 1mg 7%
Potassium 62mg 1%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.