Sheet Pan White Texas Cake with Chocolate Frosting

By AislePrompt Editorial · ·

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

A moist, fluffy sheet cake with a tender crumb topped by rich, luscious chocolate frosting, perfect for feeding a crowd or potluck. This American-inspired recipe, ready in about 55 minutes, layers all-purpose flour, granulated sugar, baking powder into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 350 calories and feeds 20, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 40 min Serves 20 American cuisine 350 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 350°F. In a large bowl, whisk together 3 cups all-purpose flour, 2 1/4 cups granulated sugar, 1 tsp baking powder, 1 tsp baking soda, and 1/2 tsp salt.
  2. Step 2: In a separate bowl, whisk 1 1/2 cups buttermilk, 1 cup vegetable oil, 3 large eggs, and 1 tbsp vanilla extract until smooth. Pour wet ingredients into dry and stir until just combined.
  3. Step 3: Pour batter into a greased 15x10-inch sheet pan, smoothing the top with a spatula. Bake for 35-40 minutes until a toothpick inserted in the center comes out clean. Let cool completely.
  4. Step 4: For the frosting, beat 1/2 cup softened unsalted butter until creamy. Add 1/3 cup unsweetened cocoa powder and mix well.
  5. Step 5: Gradually add 2 cups powdered sugar, alternating with 1/4 cup whole milk, beating well after each addition until smooth and spreadable. Stir in 1 tsp vanilla extract.
  6. Step 6: Spread the chocolate frosting evenly over the cooled cake. Slice into squares and serve.

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