Everything’s bigger in Texas, they say, and that goes for the beloved Texas sheet cake. Also known as a buttermilk chocolate sheet cake. Rich. Fudgy. Covered in a pecan frosting that’ll have you scraping the pan clean.
I’ve been chasing the perfect Texas sheet cake for a while now. My aunt used to bring one over to the house on the weekends sometimes, and boy it was a treat!
It took me a long time to get the perfect recipe just like I wanted it. Lots of the recipes I tried ended up being too dry, or the frosting was too sweet for my taste. The sour cream is the secret in this one. It keeps the crumb perfectly tender. Gives the chocolate cake tons of depth.
But the real magic happens when you pour the warm icing over the cake when it’s still hot. It sinks into every single crack. Sets up into this glossy, fudgy layer that will make your toes curl. My kids will stand at the counter picking pecans off the top before I can even get it sliced.
This is the sheet pan dessert I bring to every cookout and potluck. People always ask for the recipe. If you’ve been looking for a chocolate cake that feeds a crowd without a ton of fuss, this is it. One pan. No layers. Just a seriously good potluck cake.
Why You’ll Love This Recipe
Texas sheet cake is one of a kind, and there are tons of reasons to love it. Chocolate, pecans, should I go on?
- One pan and done: No stacking layers or fiddling with a turntable. Everything bakes in a single sheet pan.
- That pecan frosting though: Warm, fudgy, and loaded with toasted pecans. It gets poured right over the hot cake so it melts into every bite.
- Feeds a whole crowd: This Texas sheet cake serves 20+ people easily. It’s the definition of a potluck cake.
- Tastes way fancier than it is: The semisweet chocolate and Dutch cocoa make this taste like a bakery made it, but it comes together in about 30 minutes.
Ingredient Notes and Substitutions
You don’t need anything exotic here. Most of it is probably already sitting in your pantry, that neglected shelf above the stove maybe!
- All-purpose flour: This chocolate cake isn’t supposed to rise tall. All-purpose keeps it dense in the best way. Don’t use self-rising or you’ll throw the texture off.
- Sour cream: A lot of traditional Texas sheet cake recipes call for buttermilk, but sour cream gives it a richer flavor. You can swap in full-fat Greek yogurt if that’s what you have.
- Semisweet chocolate: Real chopped chocolate makes a huge difference over just using cocoa alone. Chocolate chips work in a pinch too.
- Dutch-processed cocoa powder: This gives both the cake and pecan frosting that deep, dark color. Regular cocoa will work but the taste won’t be quite as rich.
- Vegetable oil: Oil keeps this sheet pan dessert moist longer than an all-butter cake would. Canola or avocado oil are fine substitutes.
- Toasted pecans: Don’t skip these. They add crunch and a nutty flavor that balances out all that chocolate. Walnuts work if you’re not a pecan person.
Tips for Success
I’ve learne a few things that might make it easier for you (so you don’t make my mistakes!)
- Use room temperature eggs: Cold eggs can seize when they hit the warm chocolate mixture. Pull them out about 30 minutes before you start.
- Don’t overbake: This buttermilk cake should be just barely done. It keeps cooking in the hot pan for a few more minutes on the rack.
- Frost while it’s warm: That’s how the icing soaks in and creates that signature fudgy crust.
- Toast your pecans first: Spread them on a baking sheet at 350 for 5 to 8 minutes. So much more flavor than using them straight from the bag.
Storage and Reheating
Cover the pan tightly with plastic wrap or foil and keep it in the fridge for up to 2 days. Store it away from anything with a strong smell because this cake absorbs odors fast. Eat it cold or let slices sit out about 15 minutes to come to room temp.
You can freeze this Texas sheet cake for up to a month. Wrap it in plastic wrap, then foil, and slide it into a freezer bag. Let it thaw overnight in the fridge when you’re ready. Great way to make this potluck cake ahead of time for parties.
Serving Suggestions
A scoop of vanilla ice cream on top a warm slice sure does hit the spot. My sister swears it’s better with a drizzle of caramel sauce.
For cookouts, you’ve got a potluck cake you can slice right in the pan. A cold glass of milk or a cup of hot coffee pair perfectly with this chocolate cake.
FAQs
What is a Texas sheet cake?
A Texas sheet cake is a thin, rich chocolate cake baked in a large sheet pan. It traditionally uses buttermilk or sour cream and gets topped with a warm fudge icing full of pecans. It’s not the same as German chocolate cake. There’s no coconut, and this one is denser and more chocolatey. It’s a sheet pan dessert that was born for feeding crowds.
What size pan do I need?
This recipe calls for an 18 x 13-inch baking sheet, which is a standard half sheet pan. If you use something smaller, your cake will be thicker and you’ll need to add more baking time. Do the toothpick test before pulling it out.
Can I use buttermilk instead of sour cream?
You can. Use 1/2 cup of buttermilk in place the sour cream. The texture will be a little lighter and less rich, but it still makes a great buttermilk cake.
Notes
This recipe came from an old tattered index card I found inside my aunt’s ancient Betty Crocker cookbook. She made notes on it about adding extra pecans and using sour cream in place of the buttermilk.
Buttermilk Chocolate Sheet Cake
Ingredients
- 2 cups All-purpose flour
- 2 cups Granulated sugar
- ½ tsp. Baking soda
- ½ tsp. Salt
- 8 oz. Semisweet chocolate chopped fine
- 4 tbsp. Unsalted butter
- ¾ cup Vegetable oil
- ¾ cup Water
- ½ cup Dutch-processed cocoa powder
- 2 Large eggs plus 2 yolks Room temperature
- 2 tsp. Pure vanilla extract
- ¼ cup Full-fat sour cream Room temperature
- 8 tbsp. 1 stick Unsalted butter (for the icing)
- ½ cup Heavy cream for the icing
- ½ cup Dutch-processed cocoa powder for the icing
- 1 tbsp. Light corn syrup
- 3 cups Confectioners’ sugar
- 1 tbsp. Vanilla extract for the icing
- 1 cup Toasted pecans chopped
Instructions
- Adjust your oven rack to the middle position and preheat to 350°F. Grease a heavy 18×13-inch rimmed half-sheet baking pan.
- In a large bowl, thoroughly whisk together the all-purpose flour, granulated sugar, baking soda, and salt. Set aside. In a separate medium bowl, whisk the whole eggs, extra yolks, 2 teaspoons of vanilla extract, and full-fat sour cream together until completely smooth and unified.
- Combine the chopped semisweet chocolate, 4 tablespoons of butter, vegetable oil, water, and ½ cup of Dutch-processed cocoa powder in a large saucepan over medium heat. Pro Tip: Bringing these ingredients to a simmer does more than melt the solid chocolate—the hot oil and boiling water actively “bloom” the cocoa powder. This intense thermal contact dissolves the starch hulls around the cocoa cells, releasing deeply trapped, complex chocolate volatile aromas that dry mixing cannot achieve.
- Remove the chocolate mixture from the heat once completely smooth (about 3 to 5 minutes). Immediately pour the hot liquid chocolate straight into the dry flour bowl, whisking continuously until just combined.
- Whisk the prepared egg and sour cream mixture directly into the warm chocolate batter. Crucial: Ensure your sour cream and eggs are at room temperature so they integrate seamlessly without shocking and curdling the hot chocolate base. Pour the glossy, runny batter onto the prepared sheet pan.
- Bake for 18 to 20 minutes until the top springs back lightly when pressed or a toothpick inserted in the center emerges clean. Transfer the pan to a wire rack.
- The Molten Capillary Integration: While the cake has exactly 5 minutes left in the oven, prepare the frosting. Melt 1 stick of butter with the heavy cream, ½ cup of cocoa powder, and light corn syrup in a saucepan over medium heat, whisking until smooth. Remove from the heat and vigorously beat in the confectioners’ sugar and 1 tablespoon of vanilla. The absolute second the cake comes out of the oven, dump the hot, liquid icing over the surface and smooth it to the edges with an offset spatula. The heat expands the cake’s surface pores, allowing the hot icing to fuse straight down into the upper crumb.
- Shower the molten icing immediately with the toasted, chopped pecans so they lock into the setting glaze layer. Let the cake cool completely to room temperature before slicing into dense, fudgy squares.
