Chocolate Texas Sheet Cake is that classic thin chocolate cake with a warm cocoa frosting poured right over the top. It’s simple, a little old-fashioned in the best way, and it slices up neatly for sharing.
My take is all about keeping the cake ultra moist with a soft, fudgy crumb, then going in with that glossy frosting while everything is still warm. The frosting sets into a thin layer that’s not like buttercream at all—it’s more like a pour-over glaze that turns slightly chewy at the edges.
I like this one for potlucks, birthday tables, and any time I need a one-pan chocolate cake that serves a lot of people. It’s great plain, but I’ll add pecans when I want that classic Texas sheet cake finish.
Why You’ll Love This Recipe
One-pan cake: No layers, no stacking, no fuss. You bake it in a sheet pan and slice it right there.
Warm frosting finish: Pouring the cocoa frosting over the hot cake is what makes it taste like a real Texas sheet cake, not just “chocolate cake with icing.”
Soft, moist crumb: This cake stays tender and a little fudgy, especially if you pull it before it gets dry.
Feeds a group: It’s easy to cut into neat squares, so it’s my go-to when I need dessert for a lot of people.
Pecan optional: You can keep it nut-free, or toss in chopped pecans (or walnuts) for that traditional crunch.
Ingredients You’ll Need
Cake
- All-purpose flour: I use regular flour here. Measure it the simple way (spoon and level) so the cake stays light and not dry.
- Granulated sugar: This is the classic sweetness for sheet cake. It also helps keep the crumb soft.
- Baking soda: Don’t skip it—this gives the cake its lift with the sour cream in the batter.
- Fine salt: A full teaspoon sounds like a lot, but it keeps the chocolate from tasting flat.
- Unsalted butter: Butter is doing a lot of the work here for flavor and tenderness. If you only have salted butter, just cut the added salt back a bit.
- Water: This gets heated with the butter and cocoa to make that classic thin, pourable chocolate mixture.
- Unsweetened cocoa powder: Any unsweetened cocoa works. I like to sift it if it’s lumpy so you don’t get little bitter pockets.
- Sour cream: This is what makes the cake so moist and gives it a slightly tangy chocolate flavor. Full-fat is best here.
- Eggs: Large eggs, room temp if you remember. They help the cake set up without getting tough.
- Vanilla extract: Just enough to round out the cocoa flavor. Use real vanilla if you can.
Frosting
- Unsalted butter: This makes the frosting rich and smooth. It also helps it set into that classic sheet-cake layer.
- Whole milk: Whole milk gives the frosting the right body. You can add an extra splash if it thickens too fast.
- Unsweetened cocoa powder: Same cocoa as the cake is fine. Sifting helps a lot for a smoother pour.
- Vanilla extract: A small amount makes the frosting taste more finished and less one-note.
- Powdered sugar: This is what thickens the frosting quickly. If yours is really lumpy, sift it so it whisks in faster.
- Chopped pecans (optional): Totally classic on top. I like them chopped fairly small so they scatter evenly in each slice.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F and grease an 18 by 13 inch rimmed sheet pan.
- Mix the dry ingredients: Whisk the flour, sugar, baking soda, and salt together in a large bowl.
- Boil the cocoa mixture: Add the butter, water, and cocoa powder to a saucepan and bring it to a boil.
- Stir the batter: Pour the hot cocoa mixture over the dry ingredients and stir until combined.
- Add the wet ingredients: Whisk in the sour cream, then whisk in the eggs, then the vanilla, until the batter is smooth.
- Bake: Spread the batter evenly in the pan and bake until the center springs back and a toothpick comes out with a few moist crumbs, about 18 to 22 minutes.
- Heat the frosting base: Near the end of baking, heat the butter, milk, and cocoa in a saucepan until steaming and smooth. Don’t boil it hard.
- Finish the frosting: Remove from the heat and whisk in the vanilla, then whisk in the powdered sugar until glossy and pourable. Add a little more milk if needed.
- Add the pecans: Stir in the chopped pecans if using.
- Frost the cake: Pour the warm frosting over the hot cake and spread quickly to the edges.
- Let set: Let the cake rest for 20 to 30 minutes to set before slicing.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Don’t overbake the cake. This one is best when a toothpick comes out with a few moist crumbs. If you wait for it to come out clean, the cake can lose that soft sheet-cake texture.
Pour the frosting while everything is warm. Warm cake plus warm frosting is the whole point here. That’s what helps the frosting settle in and set into that classic thin layer.
Sift the cocoa and powdered sugar if they’re lumpy. You’ll get a smoother frosting with less whisking. It also helps you avoid little dry bits that won’t melt in.
Spread fast and go all the way to the edges. The frosting thickens as it sits, so I keep my spatula ready. If you miss the corners, it’s hard to fix once it starts setting.
Buttermilk works if you don’t have sour cream. Swap it in for a slightly tangier cake. I usually use sour cream when I want a richer crumb.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Milk: A cold glass of milk is simple and classic with this cake. It’s especially nice if you used the pecans.
- Coffee: This is really good with black coffee or a latte. The cocoa frosting goes well with something warm to drink.
- Ice cream: Vanilla ice cream on the side is my favorite when I’m serving it as a plated dessert. You don’t need much.
- Fresh berries: Strawberries or raspberries are nice if you want something fresh on the plate. I’ll do this when the cake feels extra rich.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store leftovers covered at room temperature for 1 to 2 days if your kitchen isn’t too warm. After that, I usually move it to the fridge so the frosting stays in good shape.
Store leftovers covered in the fridge for up to 4 days. The cake firms up a bit when chilled, but it’s still really good.
For serving, I like to let slices sit out for 15 to 20 minutes, or give them a quick microwave warm-up. Just keep it short so the frosting doesn’t melt off.
If you want them to last longer, freeze individual portions in an airtight container. Thaw in the fridge overnight or on the counter for a couple hours.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Can I use buttermilk instead of sour cream?
Yes. Buttermilk works well and gives the cake a slightly tangier flavor. The batter will be a bit looser, but it bakes up just fine.
Do I have to use pecans?
No, you can skip the nuts completely. If you want something similar, toasted walnuts are a good swap.
How do I know when the cake is done?
The center should spring back when you lightly press it, and a toothpick should come out with a few moist crumbs. If it comes out totally clean, it’s usually a sign the cake went a little too long.
Why does the frosting need to be poured on warm?
That’s what gives you the classic Texas sheet cake finish. Warm frosting spreads thin, settles into the top of the cake, and then sets into a smooth layer as it cools.
Can I make this in a different pan size?
This recipe is written for an 18 by 13 inch rimmed sheet pan. A different pan can work, but the thickness and bake time will change, and the frosting layer may end up thicker or thinner.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Chocolate Texas Sheet Cake
INGREDIENTS
Cake
- 2 cups all purpose flour
- 2 cups granulated sugar
- 1 tsp baking soda
- 1 tsp fine salt
- 1 cup unsalted butter
- 1 cup water
- 1/4 cup unsweetened cocoa powder
- 1/2 cup sour cream
- 2 large eggs
- 1 tsp vanilla extract.
Frosting
- 1/2 cup unsalted butter
- 6 tbsp whole milk
- 1/4 cup unsweetened cocoa powder
- 1 tsp vanilla extract
- 3 1/2 cups powdered sugar
- 1 cup chopped pecans optional.
INSTRUCTIONS
Cake
- heat oven to 350 degrees F and grease a 18 by 13 inch rimmed sheet pan
- whisk flour sugar baking soda and salt in a large bowl
- bring butter water and cocoa to a boil in a saucepan then pour over dry ingredients and stir until combined
- whisk in sour cream then eggs then vanilla until smooth
- spread batter evenly in pan and bake until center springs back and a toothpick comes out with a few moist crumbs about 18 to 22 minutes.
Frosting
- near the end of baking heat butter milk and cocoa in a saucepan until steaming and smooth do not boil hard
- remove from heat and whisk in vanilla then powdered sugar until glossy and pourable adding a little more milk if needed
- stir in pecans if using
- pour warm frosting over hot cake and spread quickly to the edges then rest 20 to 30 minutes to set before slicing.
