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A square slice of chocolate sheet cake on a white plate

Texas Sheet Cake

  • Author: Lindsay
  • Prep Time: 25 minutes
  • Cook Time: 20 minutes
  • Total Time: 45 minutes
  • Yield: 15-20 slices
  • Category: Dessert
  • Method: Baking
  • Cuisine: American


Both decadent and easy, this Texas Sheet Cake is perfect for big groups! The soft, fluffy texture of this chocolate sheet cake is always a hit at potlucks and other gatherings!



  • 2 cups (260g) all purpose flour
  • 2 cups (414g) sugar
  • 1/2 tsp salt
  • 1 cup (224g) unsalted butter
  • 5 tbsp (35g) natural unsweetened cocoa powder
  • 1 cup (240ml) hot water
  • 1/2 cup (120ml) buttermilk
  • 2 large eggs
  • 1 tsp baking soda
  • 1 tsp vanilla extract


  • 1/2 cup (112g) unsalted butter
  • 6 tbsp milk
  • 4 tbsp (28g) natural unsweetened cocoa powder
  • 3 3/4 cups (431g) powdered sugar
  • 1 tsp vanilla extract


  1. Preheat oven to 350 and spray a 12×18 inch sheet pan/jelly roll pan with nonstick baking spray.
  2. Combine flour, sugar, and salt in a large mixing bowl. Set aside.
  3. Melt butter in a saucepan, then add the cocoa powder and stir together to combine.
  4. Add the hot water and bring mixture to a boil. Allow mixture to boil for 30 seconds, then turn off the heat.
  5. Pour the chocolate mixture over the flour mixture, and stir to combine. Allow to cool for a few minutes.
  6. Add the buttermilk and eggs to a measuring cup and beat them together, then add the baking soda and vanilla extract.
  7. Add the buttermilk mixture to the chocolate mixture and whisk together until well combined
  8. Pour the batter evenly into the cake pan, then bake for 15-20 minutes.
  9. While cake is baking, make the icing. Add the butter, milk and cocoa to a saucepan. Bring mixture to a boil.
  10. Once boiling, remove it from the heat and stir in powdered sugar and vanilla extract and whisk well until no lumps remain.
  11. Pour warm icing over the warm cake and spread evenly.


  • Serving Size:
  • Calories: 352
  • Sugar: 42.7 g
  • Sodium: 140.3 mg
  • Fat: 14.9 g
  • Carbohydrates: 54 g
  • Protein: 2.9 g
  • Cholesterol: 56 mg