Square slice of Texas sheet cake on a small white plate with a fork.
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4.72 from 21 votes

The BEST Texas Sheet Cake

The best (and easiest) Texas Sheet Cake is an amazing chocolate cake recipe made in a jelly roll pan and covered in warm chocolate frosting.
Prep Time10 mins
Cook Time15 mins
Total Time30 mins
Course: Dessert
Cuisine: American
Servings: 15 people
Calories: 475kcal
Author: Lauren Allen

Ingredients

  • 1 cup water
  • 1 cup butter (2 sticks)
  • 3 Tablespoons unsweetened cocoa powder
  • 2 cups all-purpose flour
  • 2 cups granulated sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup sour cream
  • 2 large eggs
  • 1 teaspoon vanilla extract

For the Frosting

  • 6 Tablespoons milk
  • 3 Tablespoons unsweetened cocoa powder
  • 1/2 cup butter (1 stick)
  • 3 3/4 cups powdered sugar

Instructions

  • Preheat oven to 350 degrees F and grease a 18x13'' pan.
  • Add water butter cocoa powder to a medium saucepan over medium heat. Bring mixture to a boil.
  • Meanwhile, in a separate bowl mix together the flour, sugar baking soda and salt. 
  • In another small bowl mix together the sour cream, eggs and vanilla. 
  • Add sour cream/egg mixture to the flour mixture and mix until combined. 
  • Once the chocolate mixture in the saucepan in boiling, remove it from heat and pour it into the batter. Mix until combined and no lumps remain.
  • Pour mixture into prepared pan and smooth with a spatula to make sure it is dispersed in an even layer.
  •  Bake in preheated oven for 15-20 minutes or until set (mine is usually done around 15 minutes).
  • When the cake is about half-way through cooking, prepare the frosting.

For the Chocolate Sheet Cake Frosting

  • Add milk, cocoa and butter to a saucepan. Bring mixture to a boil. 
  • Once boiling, remove it from the heat and stir in powdered sugar. I like to beat the mixture with my hand-held mixer to get rid of any lumps. 
  • Pour hot icing over hot cake. Use a spatula to spread it evenly over the cake. Allow frosting to set for about 10 minutes before eating.

Video

Notes

You can store any extra cake covered, in an air-tight container for 2-3 days.

Nutrition

Calories: 475kcal | Carbohydrates: 71g | Protein: 3g | Fat: 21g | Saturated Fat: 13g | Cholesterol: 75mg | Sodium: 343mg | Potassium: 81mg | Fiber: 1g | Sugar: 56g | Vitamin A: 655IU | Vitamin C: 0.1mg | Calcium: 29mg | Iron: 1.2mg