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Overhead photo of frosted Texas Sheet Cake cut into small squares.
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Texas Sheet Cake with Buttermilk

This Texas sheet cake is so yummy! We love that it's easy to make. The cake is moist and the frosting is irresistible.
Course Dessert
Cuisine American
Prep Time 25 minutes
Cook Time 15 minutes
Total Time 53 minutes
Servings 24 servings
Calories 310kcal
Author Whitney Wright

Equipment

Ingredients

  • 1 cup butter
  • 1 cup water
  • 5 tablespoons cocoa powder
  • 2 cups flour
  • 2 cups granulated sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 eggs, beaten
  • 1 teaspoon vanilla extract
  • 1/2 cup buttermilk

Frosting

Instructions

Chocolate Cake

  • Preheat the oven to 350°F. Lightly spray an 18” x 13” pan with cooking spray.
  • In a small saucepan over medium heat, add the butter, water, and cocoa powder. Bring to a boil. Remove from heat. Set aside. 
  • In a large bowl add flour, sugar, baking soda, and salt. Whisk to combine. Add the chocolate mixture. Mix well. Add eggs, vanilla, and buttermilk. Mix until combine. 
  • Pour batter into prepared pan. Bake for 15-20 minutes, or until toothpick inserted in the center comes out clean. (All ovens vary, mine finishes baking by 15 minutes, but yours might need the full 20 minutes, so keep an eye on it).
  • Cool the cake for about 3 minutes before pouring the frosting over it.

Frosting

  • Once the cake is halfway done baking begin making the frosting. In a small saucepan over medium heat, add the butter and heat until melted. Once fully melted add the cocoa powder and stir until smooth.
  • Remove from heat. Add the milk, vanilla, and powdered sugar. Stir until combined and smooth. Pour the frosting over the cake and spread quickly before it sets.

Notes

You want to start the frosting when the cake is just more than halfway done. The cake should only cool for 3 minutes before frosting. And you want the frosting to just be done so it doesn't set in the pan. 

Nutrition

Calories: 310kcal | Carbohydrates: 45g | Protein: 2g | Fat: 14g | Saturated Fat: 9g | Cholesterol: 50mg | Sodium: 225mg | Potassium: 60mg | Fiber: 1g | Sugar: 36g | Vitamin A: 445IU | Calcium: 20mg | Iron: 0.8mg