Aunt Dorothys Texas Sheet Cake Recipe
Aunt Dorothy’s Texas Sheet Cake is a beloved classic that has been passed down through generations, known for its rich chocolate flavor and moist texture. This recipe is perfect for gatherings, celebrations, or simply a sweet treat at home. The combination of chocolate and nuts creates a delightful harmony that will have everyone coming back for seconds. Let’s dive into this delightful baking experience!
Top Reasons to Make Aunt Dorothys Texas Sheet Cake Recipe

- Quick and Easy: This cake comes together in no time, making it perfect for busy bakers.
- Feeds a Crowd: The sheet cake format means you can easily serve a large group, making it ideal for parties.
- Deliciously Chocolatey: Rich chocolate flavor in both the cake and frosting ensures every bite is indulgent.
- Versatile Toppings: You can personalize it with your choice of nuts or leave it plain for a smooth finish.
- Perfectly Moist: The combination of ingredients ensures a cake that stays moist for days.
Shopping List
- 1 cup (205g) unsalted butter
- 1 cup (250ml) water
- 5 tablespoons (4 tablespoons) unsweetened cocoa powder
- 2 cups (250g) all-purpose flour
- 2 cups (400g) granulated sugar
- 1 teaspoon baking soda
- 0.5 teaspoon salt
- 2 eggs
- 0.5 cup (115ml) sour cream
- 1 teaspoon vanilla extract
- 0.5 cup (51.25g) unsalted butter (for frosting)
- 6 tablespoons milk (for frosting)
- 5 tablespoons (4 tablespoons) unsweetened cocoa powder (for frosting)
- 1 teaspoon vanilla extract (for frosting)
- 4 cups (480g) powdered sugar (for frosting)
- 1 cup (99g) chopped pecans or walnuts (optional)
Tools of the Trade
- Mixing Bowls: A variety of sizes for mixing wet and dry ingredients.
- Whisk: Essential for combining ingredients smoothly.
- Baking Sheet: A large, rimmed baking sheet to hold the cake.
- Spatula: For spreading the batter evenly in the baking sheet.
- Cooling Rack: To cool the cake before frosting.
- Measuring Cups and Spoons: For precise measurements of all ingredients.
Step-by-Step: Aunt Dorothys Texas Sheet Cake Recipe

Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures that your cake bakes evenly.
Step 2: Prepare the Batter
In a medium saucepan, combine 1 cup of unsalted butter, 1 cup of water, and 5 tablespoons of unsweetened cocoa powder. Heat over medium heat, stirring until the butter is melted and the mixture is smooth. Remove from heat.
Step 3: Mix Dry Ingredients
In a large mixing bowl, whisk together 2 cups of all-purpose flour, 2 cups of granulated sugar, 1 teaspoon of baking soda, and 0.5 teaspoon of salt.
Step 4: Combine Wet and Dry Ingredients
Pour the warm chocolate mixture into the dry ingredients. Stir until just combined.
Step 5: Add Eggs and Sour Cream
Add 2 eggs, 0.5 cup of sour cream, and 1 teaspoon of vanilla extract to the batter. Mix until smooth and well combined.
Step 6: Bake the Cake
Pour the batter into a greased baking sheet and spread it evenly. Bake for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Step 7: Prepare the Frosting
While the cake is baking, make the frosting. In a medium saucepan, melt 0.5 cup of unsalted butter. Stir in 6 tablespoons of milk and 5 tablespoons of cocoa powder. Bring to a simmer, then remove from heat.
Step 8: Mix the Frosting
In a separate bowl, whisk together 4 cups of powdered sugar and 1 teaspoon of vanilla extract. Pour the melted butter mixture over the sugar and mix until smooth and creamy.
Step 9: Frost the Cake
Once the cake has cooled for about 10 minutes, pour the frosting over the top of the cake. Spread it evenly with a spatula. If desired, sprinkle 1 cup of chopped pecans or walnuts on top for added texture.
Better Choices & Swaps
- For a dairy-free option, substitute the sour cream with a dairy-free yogurt or silken tofu.
- Use coconut oil instead of butter for a different flavor profile.
- Opt for whole wheat flour in place of all-purpose flour for a healthier twist.
- Replace granulated sugar with coconut sugar for a less refined option.
Problems & Prevention
Here are some common issues and how to prevent them:
- Dry Cake: Make sure not to overbake the cake; start checking for doneness a few minutes before the recommended time.
- Frosting Too Runny: If the frosting is too thin, add more powdered sugar until you reach the desired consistency.
- Cake Sticking to the Pan: Ensure that the baking sheet is thoroughly greased before pouring in the batter.
- Uneven Baking: Rotate the baking sheet halfway through the baking time to ensure even cooking.
Meal Prep & Storage Notes
If you’re planning ahead, you can bake the cake a day in advance. Allow it to cool completely before frosting and storing in an airtight container. The cake can be kept at room temperature for up to 3 days or refrigerated for up to a week. If you decide to freeze it, wrap it tightly in plastic wrap and then aluminum foil; it will stay fresh for up to 3 months. Thaw in the refrigerator before serving.
Troubleshooting Q&A
Why did my cake sink in the middle?
This can happen if the cake is underbaked or if there was too much moisture in the batter. Make sure to measure ingredients accurately and bake until a toothpick comes out clean.
How can I make my frosting thicker?
Add additional powdered sugar a little at a time until you achieve the desired thickness. You can also reduce the milk slightly in the frosting recipe.
Can I use a different type of nut?
Absolutely! Feel free to substitute with your favorite nuts, such as almonds or hazelnuts, or omit them entirely if you prefer a nut-free version.
What should I do if I don’t have unsweetened cocoa powder?
You can use sweetened cocoa powder, but reduce the amount of granulated sugar in the cake and frosting to balance the sweetness.
See You at the Table
Aunt Dorothy’s Texas Sheet Cake is more than just a dessert; it’s a family tradition filled with love, laughter, and delicious memories. This cake is sure to impress friends and family alike, making it a staple for any gathering. Whether you’re celebrating a birthday, hosting a potluck, or simply enjoying a quiet afternoon, this cake is the perfect companion. Get ready to indulge in a slice of chocolate heaven!

Aunt Dorothys Texas Sheet Cake Recipe
Ingredients
Equipment
Method
- Step 1: Preheat your oven to 350°F (175°C) to ensure even baking.
- Step 2: In a medium saucepan, combine 1 cup of unsalted butter, 1 cup of water, and 5 tablespoons of cocoa powder. Heat over medium heat until melted and smooth.
- Step 3: In a large mixing bowl, whisk together 2 cups of flour, 2 cups of sugar, 1 teaspoon of baking soda, and 0.5 teaspoon of salt.
- Step 4: Pour the warm chocolate mixture into the dry ingredients and stir until just combined.
- Step 5: Add 2 eggs, 0.5 cup of sour cream, and 1 teaspoon of vanilla extract. Mix until smooth.
- Step 6: Pour the batter into a greased baking sheet and bake for 20-25 minutes.
- Step 7: For the frosting, melt 0.5 cup of butter, stir in 6 tablespoons of milk and 5 tablespoons of cocoa powder, then simmer and remove from heat.
- Step 8: Whisk together 4 cups of powdered sugar and 1 teaspoon of vanilla extract in a bowl, then pour the butter mixture over and mix until smooth.
- Step 9: Once the cake cools for about 10 minutes, pour the frosting over and spread evenly. Optionally, sprinkle with chopped nuts.
Notes
- For a dairy-free option, substitute sour cream with dairy-free yogurt.
- Use coconut oil instead of butter for a different flavor.
- Freeze tightly wrapped for up to 3 months.
