Sue Shoquist’s Texas Sheet Cake

📜 Collection: JillCollection | ✍️ Attribution: Sue Shoquist | 📂 Category: Desserts Indulge in a classic Texas Sheet Cake featuring a rich, boiled cocoa frosting poured over the warm cake. This crowd-pleasing dessert is perfect for gatherings and delivers deep chocolate flavor.


Prep TimeCook TimeInactive / Chill TimeYield / Servings
15 mins15 minsNone24–30 servings

🔪 Key Equipment

  • Large mixing bowl
  • Saucepan
  • Small bowl
  • Wire whisk
  • 17x11 inch sheet pan

Ingredients

For the Cake

MeasurementsIngredientsPrep / Notes
2 cupsAll-Purpose FlourNone
2 cupsSugarNone
1 teaspoonBaking SodaNone
1 ½ teaspoonsSaltNone
1 cupMargarine2 sticks
1 cupWaterNone
3 ½ tablespoonsCocoa PowderNone
½ cupButtermilkNone
2EggsLarge, beaten
1 teaspoonVanilla ExtractNone

For the Icing

MeasurementsIngredientsPrep / Notes
½ cupMargarine1 stick
6 tablespoonsMilkNone
3 ½ tablespoonsCocoa PowderNone
1 poundConfectioners SugarNone
1 ½ teaspoonsVanilla ExtractNone
1 cupNutsChopped pecans are traditional

Instructions

Step 1: Make the Cake

  1. Preheat oven to 375°F. Grease and flour a large 17x11 inch sheet pan.
  2. In a large mixing bowl, combine the 2 cups all-purpose flour, 2 cups sugar, and 1 teaspoon baking soda.
  3. In a saucepan, bring the 1 cup margarine, 1 cup water, 3 ½ tablespoons cocoa powder, and 1 ½ teaspoons salt to a boil.
  4. Pour the hot cocoa mixture over the dry ingredients and mix well until incorporated.
  5. In a small bowl, whisk together the ½ cup buttermilk, 2 eggs, and 1 teaspoon vanilla extract.
  6. Add the buttermilk mixture to the cake batter and mix until just combined.
  7. Pour the batter into the prepared sheet pan and spread evenly.
  8. Bake for 15 minutes, or until a toothpick inserted into the center comes out clean and the edges pull away slightly.

Step 2: Make the Icing

  1. While the cake is baking, prepare the icing. In a saucepan, combine the ½ cup margarine, 6 tablespoons milk, and 3 ½ tablespoons cocoa powder.
  2. Bring the mixture to a boil, stirring constantly until everything is melted and smooth.
  3. Remove the pan from the heat. Immediately stir in the 1 pound confectioners sugar, 1 ½ teaspoons vanilla extract, and 1 cup chopped nuts until smooth.
  4. Pour the warm icing over the cake while the cake is still hot from the oven, spreading it quickly and evenly until the surface is coated.
  5. Let the cake cool completely and the icing set until firm before cutting into squares.

💡 Make-Ahead & Storage: Store the cooled cake covered at room temperature for up to 3 days, or refrigerate to keep longer.


Original Recipe Scan

Original Handwritten Card