Chocolate-Buttermilk Brownies

This chocolaty dessert, known to some as Texas Sheet Cake or Chocolate-Buttermilk Sheet Cake, has a rich and decadent flavor.

Prep Time:
30 mins
Bake Time:
25 mins
Cool Time:
60 mins
Total Time:
30 mins


  • 2 cup all-purpose flour

  • 2 cup sugar

  • 1 teaspoon baking soda

  • ¼ teaspoon salt

  • 1 cup butter

  • cup unsweetened cocoa powder

  • 1 cup water

  • 2 eggs

  • ½ cup buttermilk or sour milk (see tip,below)

  • 1 ½ teaspoon vanilla

Chocolate-Buttermilk Frosting

  • ¼ cup butter or margarine

  • 3 tablespoon unsweetened cocoa powder

  • 3 tablespoon buttermilk

  • 2 ¼ cup powdered sugar

  • ½ teaspoon vanilla

  • ¾ cup coarsely chopped pecans, toasted (optional)


  1. Preheat oven to 350 degrees F. Grease a 15x10x1-inch or a 13x9x2-inch baking pan; set aside. In a medium bowl, stir together flour, sugar, baking soda, and salt; set aside.

  2. In a medium saucepan combine butter, cocoa powder, and water. Bring mixture just to boiling, stirring constantly. Remove from heat. Add the cocoa mixture to flour mixture and beat with an electric mixer on medium to high speed until thoroughly combined. Add eggs, buttermilk, and vanilla. Beat for 1 minute (batter will be thin). Pour batter into the prepared pan.

  3. Bake for about 25 minutes for the 15x10x1-inch pan, 35 minutes for the 13x9x2-inch pan, or until a wooden toothpick inserted in the middle comes out clean.

  4. Pour warm Chocolate-Buttermilk Frosting over brownies, spreading evenly. Cool in pan on wire rack 1 hour. Cut into bars. Makes 24 bars

Chocolate-Buttermilk Frosting

  1. In a medium saucepan combine butter or margarine, cocoa powder, and buttermilk. Bring to boiling. Remove from heat. Add powdered sugar and vanilla. Beat until smooth. Stir in pecans, if desired.

Chocolate-Cinnamon-Buttermilk Brownies:

Prepare as above, except add 1 teaspoon ground cinnamon to the flour mixture.

To make sour milk, place 1 1/2 teaspoons lemon juice or vinegar in a glass measuring cup. Add enough milk to make 1/2 cup; stir. Let stand 5 minutes before using.

Nutrition Facts (per serving)

244 Calories
11g Fat
35g Carbs
2g Protein
Nutrition Facts
Servings Per Recipe 24
Calories 244
% Daily Value *
Total Fat 11g 14%
Saturated Fat 6g 30%
Cholesterol 45mg 15%
Sodium 193mg 8%
Total Carbohydrate 35g 13%
Total Sugars 25g
Protein 2g
Calcium 40.4mg 3%
Iron 0.9mg 5%
Potassium 31mg 1%
Folate, total 4mcg
Vitamin B-12 0.1mcg
Vitamin B-6 0mg

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.