Classic Texas Sheet Cake

Classic Texas sheet cake is a thin, tender chocolate cake topped with a rich chocolate frosting that sets to a fudgy finish. The cake bakes fast in a shallow pan and gets frosted while still warm, so the topping soaks slightly into the crumb. One pan feeds a crowd, and the whole thing comes together in about an hour.

Ingredients for Classic Texas Sheet Cake

All-purpose flour gives the cake structure without toughness. Cocoa powder and chocolate deliver deep chocolate flavor throughout. Butter in both cake and frosting creates richness and helps the frosting set to the right texture. Sugar sweetens and keeps the cake tender. Eggs bind the batter and add lift. Buttermilk reacts with baking soda to give the cake a fine crumb and tangy depth. Baking soda activates with the buttermilk to leaven the cake quickly. Salt and vanilla extract balance and round out the chocolate flavor. Hot coffee intensifies the cocoa and makes the batter thin enough to spread evenly in a shallow pan. Pecans add a toasted crunch to the frosting.

Why This Classic Texas Sheet Cake Works

The batter is thin and pourable, which is the secret to this cake’s signature shallow, tender crumb. Hot coffee mixed into the cocoa paste before you add the flour means the cocoa dissolves completely and seasons every bite. The cake bakes at high heat for a short time, so it stays moist and doesn’t overbake.

The frosting is made in the pan itself while the cake is still warm. The heat softens the frosting slightly so it spreads easily and sinks just a little into the cake’s surface, creating a fudgy layer that hardens as it cools. This is not a thick frosting meant to stack layers; it is a thin, glossy coat that sets to a candy-like finish.

Mistakes To Avoid

Overbaking the cake is the biggest trap. Check it at 30 minutes by inserting a toothpick in the center; it should come out with a few moist crumbs, not clean. A baked cake is tough and dry, not tender and fudgy.

Using cold frosting that has cooled too long will make it thick and chunky, and it will tear the cake as you spread it. If the frosting cools too much before you apply it, warm it gently over low heat while stirring until it reaches a pourable consistency again.

Cutting the cake before the frosting is fully set will cause the topping to smear and crack. Wait until the frosting feels firm to the touch, which takes about 2 hours at room temperature.

Measuring flour by scooping the cup directly into the bag packs it down and gives you too much, making the cake dense and dry. Always spoon flour into the measuring cup and level it, or use a scale.

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Ingredients

• 2 cups (240 grams) all-purpose flour
• 2 cups (400 grams) granulated sugar
• 3/4 cup (60 grams) unsweetened cocoa powder
• 1 teaspoon baking soda
• 1 teaspoon salt
• 1 cup (2 sticks, 227 grams) unsalted butter
• 4 ounces unsweetened chocolate, chopped
• 1 cup hot brewed coffee
• 2 large eggs, room temperature
• 1/2 cup buttermilk, room temperature
• 1 teaspoon vanilla extract
• 1/2 cup (1 stick, 113 grams) unsalted butter, for frosting
• 1/3 cup (27 grams) unsweetened cocoa powder, for frosting
• 3 cups (360 grams) powdered sugar
• 1/4 cup whole milk
• 1 teaspoon vanilla extract, for frosting
• 1 cup chopped pecans, toasted

Step-by-step Instructions

1. Position a rack in the upper third of the oven and preheat to 350°F (175°C). Lightly butter an 18×13 inch sheet pan and line it with parchment paper.
2. In a small bowl, whisk together flour, 2 cups sugar, 3/4 cup cocoa powder, baking soda, and salt.
3. In a large saucepan, melt 1 cup butter and chopped chocolate over medium heat, stirring often until smooth, about 3 minutes. Remove from heat.
4. Stir the hot coffee into the chocolate mixture until blended, then let it cool for 2 minutes.
5. Add eggs one at a time to the chocolate mixture, stirring well after each addition. Stir in vanilla extract.
6. Pour the chocolate mixture into a large bowl. Alternately add the flour mixture and buttermilk, starting and ending with flour, stirring until just combined after each addition. Do not overmix.
7. Pour the batter into the prepared pan and spread it level. Bake at 350°F (175°C) for 30 to 35 minutes, until a toothpick inserted in the center comes out with a few moist crumbs.
8. While the cake bakes, make the frosting. In a saucepan, melt 1/2 cup butter and 1/3 cup cocoa powder over medium heat, stirring until smooth, about 2 minutes. Remove from heat and stir in powdered sugar, milk, and vanilla extract until smooth.
9. When the cake comes out of the oven, immediately pour the frosting over it and spread it in an even layer with an offset spatula. Sprinkle the toasted pecans over the frosting and press them in gently.
10. Let the cake cool completely at room temperature for at least 2 hours before cutting into squares. The frosting will firm to a fudgy texture as it cools.