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5.0 from 9 votes

Chocolate Buttermilk Sheet Cake Recipe

Easy one bowl Chocolate Buttermilk Sheet Cake recipe. Fudgy buttermilk frosting on top! Perfect for a crowd, or freeze for later.

Prep Time
15 mins
Cook Time
15 mins
Total Time
40 mins
Servings: 24 servings
Calories: 314 kcal
Course: Cake
Cuisine: American

Ingredients

For the cake:
  • 2 cups granulated sugar
  • ½ cup unsweetened cocoa powder I use Ghirardelli
  • 2 cups all-purpose flour
  • 1 teaspoon baking powder
  • 2 teaspoons baking soda
  • 1 teaspoon kosher salt
  • 2 large eggs
  • ⅔ cup vegetable oil
  • 1 cup buttermilk
  • 1 cup hot water
For the icing:
  • ½ cup unsalted butter
  • ½ cup buttermilk
  • ¼ cup unsweetened cocoa powder
  • 4 cups powdered sugar
  • ¼ cup Sprinkles optional, for garnish

Instructions

    Cup of Yum
  1. Preheat oven to 350 degree F. Spray half sheet pan (size approximately 18x13-inches, I use this one from Amazon) with baking spray. Set aside.
  2. For the cake, in a large bowl, combine the sugar, cocoa, flour, baking powder, baking soda and salt. Mix until blended.
  3. Add in the eggs, oil, buttermilk, and hot water. Whisk together until fully combined. Pour into prepared baking sheet.
  4. Bake for 25 minutes, until edges pull away from the pan and a toothpick inserted into the center comes out clean. Remove from oven and cool.
  5. While cake is cooling, prepare chocolate icing. In a small saucepan, combine the butter, buttermilk, and cocoa powder. Whisk until smooth over medium high heat. Bring to a boil, and remove from heat as soon as it boils.
  6. Pour chocolate mixture into a mixing bowl and add in the powdered sugar. Beat until smooth. Pour over cake (it's okay if the cake isn't completely cooled). Add sprinkles.
  7. Cool completely and enjoy!

Notes

  • To freeze, once the icing has hardened and set, and the cake is completely cooled, slice into portions. Using an airtight container, place pieces of cake in layers separated by wax paper. Freeze. When ready to enjoy, remove from freezer and allow to thaw at room temperature.

Nutrition Information

Calories 314kcal (16%) Carbohydrates 49g (16%) Protein 4g (8%) Fat 12g (18%) Saturated Fat 3g (15%) Polyunsaturated Fat 7g Cholesterol 26mg (9%) Sodium 214mg (9%) Fiber 2g (8%) Sugar 36g (72%)

Nutrition Facts

Serving: 24servings

Amount Per Serving

Calories 314

% Daily Value*

Calories 314kcal 16%
Carbohydrates 49g 16%
Protein 4g 8%
Fat 12g 18%
Saturated Fat 3g 15%
Polyunsaturated Fat 7g 41%
Cholesterol 26mg 9%
Sodium 214mg 9%
Fiber 2g 8%
Sugar 36g 72%

* Percent Daily Values are based on a 2,000 calorie diet.