Old-Fashioned Texas Sheet Cake Recipe

Name: Texas Sheet Cake
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Ingredients: 2 cups all-purpose flour; 2 cups granulated sugar; 1 teaspoon baking soda; ½ teaspoon salt; ½ cup sour cream; 2 large eggs; 2 teaspoons vanilla extract; 1 cup water; 1 cup 2 sticks salted butter, softened; ⅓ cup cocoa powder; ½ cup salted butter (1 stick); ⅓ cup whole milk; ¼ cup cocoa powder; 4 cups powdered sugar; 2 teaspoons vanilla extract; 1 cup chopped walnuts

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This Texas sheet cake is an easy, old-fashioned chocolate cake with a rich, fudgy icing and a sprinkle of chopped walnuts. It's a no-fuss dessert that feeds a crowd and delivers big chocolate flavor every single time.

A No-Fuss Chocolate Cake That Never Disappoints

This is the kind of cake you make when you need something dependable, comforting, and deeply chocolatey. The cake bakes up thin, tender, and ultra-moist, then gets topped with a warm, poured icing that melts right into the surface. It's humble, nostalgic, and exactly the kind of dessert that disappears first at potlucks and family gatherings.

A slice of Texas Sheet Cake in baking pan, with a piece lifted out with a wooden spoon.

This Texas sheet cake comes together quickly, uses pantry staples, and doesn't require any fancy decorating. Just pour, spread, sprinkle, and serve.

Frequently Asked Questions

What does this Texas sheet cake taste like?

This cake tastes like pure chocolate comfort. The cake itself is soft and tender, while the warm icing sets into a thick, fudge-like layer that melts in your mouth. The walnuts add just enough crunch to balance the richness.

Do I have to use homemade icing, or can I use store-bought?

You can use store-bought chocolate fudge icing if needed. Warm it slightly before spreading so it pours easily. That said, the homemade icing is rich, smooth, and absolutely worth the few extra minutes.

Can I make this ahead of time and freeze it?

Yes. You can bake the cake ahead of time and wrap it tightly in plastic wrap while it's still slightly warm. Freeze it on a sheet pan to prevent cracking. When ready to serve, thaw overnight in the refrigerator, then add the icing and walnuts before serving.

How should I store leftovers?

Texas sheet cake will keep for 1 to 2 days at room temperature or 4 to 5 days in an airtight container in the refrigerator.

Ingredients

All-purpose flour – This forms the structure of the cake. Cake flour can be used, but all-purpose gives the classic Texas sheet cake texture.
Granulated sugar – Sweetens the cake and helps keep it tender and moist.
Baking soda – Reacts with the sour cream to give the cake its soft, spongy lift.
Salt – Balances the sweetness and enhances the chocolate flavor.
Sour cream – Keeps the cake ultra-moist and tender. Buttermilk can be substituted for a slightly tangier bite.
Large eggs – Bind everything together and help create a smooth, cohesive batter. Room temperature eggs work best.
Vanilla extract – Adds warmth and depth to the chocolate flavor. Almond extract can be used for a subtle nutty note.
Water – Helps dissolve the cocoa and create a smooth, pourable batter.
Salted butter
Adds richness and flavor to both the cake and icing. Unsalted butter or margarine also works.
Cocoa powder – Provides the deep chocolate flavor. Regular cocoa powder is perfect for this recipe.
Whole milk – Makes the icing rich and creamy. Two percent milk works well too.
Powdered sugar – Sweetens and thickens the icing into that classic fudgy texture.
Chopped walnuts – Add a bit of crunch and a nostalgic finish. Walnuts or slivered almonds are both great options.

Instructions:

Start by preheating your oven to 350°F and spraying a 10×15 jelly roll pan with nonstick cooking spray.

In a large mixing bowl, whisk together the flour, sugar, baking soda, and salt until everything is evenly combined. This helps prevent pockets of baking soda later on.

Dry ingredients mixed together in a mixing bowl.

Using a hand mixer or stand mixer, beat in the sour cream and eggs just until combined. You don't want to overmix here. Set the bowl aside while you prepare the chocolate mixture.

Eggs and sour cream added to Texas Sheet cake dry ingredients in mixing bowl.

In a small skillet over low heat, combine the water, butter, and cocoa powder. Stir occasionally and bring the mixture to a boil. As soon as it starts bubbling, remove it from the heat. This step helps bloom the cocoa and gives the cake its deep chocolate flavor.

Melted butter, water and cocoa in sauce pan.

Let the cocoa mixture cool slightly, then carefully pour it into the mixing bowl with the rest of the ingredients. Beat until the batter is smooth and fully combined.

Hot cocoa mixture poured over the top of the cake.

Pour the batter into the prepared pan and spread it into an even layer. Bake uncovered for about 20 minutes, or until a toothpick inserted in the center comes out clean.

While the cake bakes, prepare the icing so it's ready to go while the cake is still warm.

In a large saucepan over medium heat, stir together the butter, milk, and cocoa powder. Once the mixture begins to bubble, remove it from the heat and immediately stir in the powdered sugar and vanilla until smooth and glossy.

Texas Sheet Cake frosting ingredients in sauce pan.

As soon as the cake comes out of the oven, spread the warm icing evenly over the top. Sprinkle with chopped walnuts while the icing is still soft so they settle in nicely.

Let the cake cool slightly before slicing, or serve it warm for an extra fudgy finish.

A slice of Texas sheet cake resting on a wooden spatula, above a pan of the rest of the cake.

Tips for the Best Texas Sheet Cake

Use a light-colored metal pan if possible.
Dark pans can cause the edges to bake faster than the center, which can dry out a thin sheet cake.
Don't overmix once the cocoa mixture is added.
Mix just until the batter is smooth. Overmixing can make the cake dense instead of tender.
Pour the icing on while the cake is still warm.
This allows the frosting to melt slightly into the surface, creating that classic fudgy layer Texas sheet cake is known for.
Spread the icing quickly.
The frosting thickens as it cools, so have a spatula ready and work right away. Be careful, if your cake bakes to the top of your sheet pan, the icing can run off and get messy so add a little, and spread, add a little more, etc.
Toast the walnuts for extra flavor.
Lightly toasting the walnuts before sprinkling them on adds a deeper, nuttier flavor and a little extra crunch.
Serve warm for the most nostalgic texture.
Texas sheet cake is especially good slightly warm, when the icing is soft and almost melt-in-your-mouth.
Cut clean slices by wiping the knife between cuts.
This keeps the icing neat and gives you bakery-style slices.

More Vintage Recipes

For another vintage-style cake that's always a hit, try this Sock It to Me Cake. Or, if you love vintage recipes like this one, you’ll also love these: