Moist Texas Sheet Cake Made with Buttermilk

This Texas sheet cake recipe is rich, fudgy, and unbelievably moist, with a tender crumb that practically melts in your mouth. It’s finished with a warm pecan chocolate fudge frosting that soaks into the cake and a crisp chocolate crunch on top for the perfect contrast of texture. If you want an easy, crowd-pleasing chocolate cake that feels a little extra, this is the one.

two slices of texas sheet cake on a plate with a fork.

This isn’t just any sheet cake — it’s a chocolate-on-chocolate Texas sheet cake that bakes up incredibly moist and tender. If you’ve ever had a dry sheet cake, this recipe will change your mind. Best part: it all comes together in about an hour and requires minimal equipment.

Texas Sheet Cake with Buttermilk (Classic Recipe, Elevated)

photo of texas sheet cake on a plate topped with chocolate fudge frosting and chocolate crunch topping.

This is a classic single-layer Texas sheet cake with a few thoughtful upgrades. The cake is soft and fudgy, the frosting is gooey and chocolate-forward, and the chocolate crunch topping adds a pleasant bite that highlights the pecans. That contrast of textures takes the cake from comforting to unforgettable.

Recipe Highlights: Why This is the Best Texas Sheet Cake

  • No mixer required. You only need mixing bowls, a saucepan, and a whisk.
  • Buttermilk keeps the cake super tender. It adds moisture and a subtle tang that prevents the cake from drying out.
  • Ideal for gatherings. The 9×13 pan yields a crowd-pleasing cake perfect for cookouts, potlucks, and holidays.

Key Ingredients

chocolate crunch topping with chopped pecans on a flat surface.

(Full ingredient amounts are included in the recipe card below.)

  • Whole-fat buttermilk — store-bought is best, but you can acidulate whole milk with lemon juice or vinegar if needed.
  • Unsweetened cocoa powder — natural cocoa adds chocolate flavor and reacts with baking soda for lift.
  • Cinnamon and nutmeg — a touch of warm spice deepens the chocolate flavor.
  • Vegetable oil + salted butter — together they lend richness and moisture for a decadent crumb.
  • Milk powder — optional, but it adds a subtle creaminess that elevates the flavor.
  • Hot coffee — blooming the cocoa in hot coffee intensifies the chocolate profile.

How To Make Texas Sheet Cake

Prep: Preheat the oven to 350°F. Line a 9×13-inch pan with parchment and grease the sides.

chocolate crumble topping mixed together in a bowl.

Step 1 — Make the chocolate crumble topping: Combine cocoa powder, brown sugar, flour, and melted butter until you have coarse crumbs.

crumble topping on a baking sheet.

Step 2 — Bake the crumble: Spread the crumble on a baking sheet and bake 8–10 minutes, then cool until crisp.

dry ingredients whisked together in a bowl.

Step 3 — Whisk dry ingredients: In a large bowl, combine flour, milk powder (if using), brown sugar, granulated sugar, baking soda, baking powder, cinnamon, nutmeg, salt, and espresso powder. Whisk until evenly mixed.

hot coffee being poured into the chocolate cake batter.

Step 4 — Mix wet ingredients: Whisk together melted butter, oil, cocoa, eggs, buttermilk, and vanilla. Stir the dry mix into the wet, then pour in hot coffee and whisk briefly until smooth.

baked texas sheet cake in a baking pan.

Step 5 — Bake: Pour batter into the prepared pan and bake 30–35 minutes, until a toothpick comes out with a few moist crumbs.

chocolate fudge frosting in a saucepan with chopped pecans and a whisk mixing everything together.

Step 6 — Make the frosting: Warm butter and heavy cream in a saucepan. Add chocolate chips and stir until melted. Off the heat, whisk in powdered sugar, cocoa, corn syrup (or honey), and vanilla. Fold in chopped pecans.

texas chocolate sheet cake in a baking pan topped with fudge frosting and chocolate crunch and chopped pecans.

Step 7 — Assemble: Cool the cake about 20 minutes, pour the warm frosting over the top so it settles into the cake, let it set, then sprinkle the chocolate crumble over the frosting.

Recipe FAQs

What size pan for Texas sheet cake?

A 9×13-inch pan gives a slightly thicker, fudgier cake. A jelly-roll pan (about 10×15 inches) produces a thinner sheet cake.

Why is it called Texas sheet cake?

The name comes from the cake’s large, sheet-pan format and its generous, comforting portion size.

Can you make this without buttermilk?

Yes. Swap whole milk combined with 1 tablespoon lemon juice or vinegar per cup and let it sit 5 minutes. The cake may be slightly less tender without true buttermilk.

Why pour the frosting over the cake while it’s warm?

Pouring warm frosting lets it melt into the cake’s top layer, creating a glossy finish and adding moisture for that fudgy texture Texas sheet cake is known for.

texas sheet cake on a cake plate with a fork.

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Texas Sheet Cake with Buttermilk

Prep: 25 mins
Cook: 35 mins
Total: 1 hr
Servings: 20
Rich, fudgy Texas sheet cake with gooey chocolate frosting and a crunchy topping — easy to make and melt-in-your-mouth good.

Equipment

  • Mixing bowls
  • 9×13 baking dish
  • Saucepan

Ingredients

  • 2 cups all-purpose flour
  • 3 tbsp milk powder (optional)
  • 1 cup brown sugar
  • 1 cup sugar
  • 1 tsp baking soda
  • 1/2 tsp baking powder
  • 1/4 tsp cinnamon
  • 1/8 tsp nutmeg
  • 1/2 tsp kosher salt
  • 2 tsp espresso powder
  • 1/2 cup (113 g) salted butter, melted
  • 1/2 cup (112 g) vegetable oil
  • 2/3 cup (56 g) unsweetened cocoa powder
  • 2 large eggs, room temperature
  • 2/3 cup (160 g) buttermilk, room temperature
  • 1 tbsp vanilla extract
  • 3/4 cup (180 g) hot coffee

Fudgy Chocolate Frosting

  • 3/4 cup salted butter
  • 3/4 cup heavy cream
  • 1 1/2 cups semi-sweet chocolate chips
  • 2 1/2 cups powdered sugar
  • 1/4 cup unsweetened cocoa powder
  • 2 tbsp corn syrup (or honey)
  • 2 tsp vanilla extract
  • 1 cup chopped pecans

Chocolate Crunch Topping

  • 2/3 cup cocoa powder
  • 1/2 cup brown sugar
  • 3/4 cup all-purpose flour
  • 6 tbsp salted butter, melted

Instructions

  1. Preheat oven to 350°F. Line a 9×13 baking dish with parchment and grease the sides.
  2. Make the chocolate crunch topping: mix cocoa, brown sugar, and flour. Add melted butter and combine until coarse crumbs form. Spread on a baking sheet and bake 8–10 minutes. Cool until crisp.
  3. Whisk dry ingredients for the cake: flour, milk powder (if using), brown sugar, sugar, baking soda, baking powder, cinnamon, nutmeg, salt, and espresso powder.
  4. In a separate bowl, whisk melted butter, oil, cocoa, eggs, buttermilk, and vanilla until smooth.
  5. Combine dry and wet ingredients until just combined, then stir in the hot coffee until the batter is smooth.
  6. Pour batter into the prepared pan and bake 30–35 minutes, until a toothpick has a few moist crumbs.
  7. While the cake bakes, make the frosting: warm butter and cream in a saucepan, add chocolate chips and stir until melted. Remove from heat and whisk in powdered sugar, cocoa, corn syrup, and vanilla. Fold in pecans.
  8. Cool cake about 20 minutes, pour warm frosting over the cake so it seeps into the top, let set, then sprinkle the chocolate crunch on top.

Nutrition (approx.)

Calories: 588 kcal; Carbohydrates: 69 g; Protein: 6 g; Fat: 35 g; Saturated Fat: 17 g (values are approximate).