This Texas Sheet Cake Brownies recipe makes about 24 thin, moist, cake-like brownies in a 10 x 15-inch jelly-roll pan. The batter comes together with melted butter, cocoa, eggs, and sour cream, then bakes at 350°F (175°C) for 20–25 minutes before being covered with warm chocolate frosting.
Each brownie has tender chocolate cake, slightly chewy edges, and a smooth frosting layer that sets with a delicate crackle. Chopped pecans or walnuts add a lovely toasted crunch, although the brownies are just as delicious without nuts.
Jump to RecipeWhy You’ll Love This Recipe
Texas Sheet Cake Brownies bring together the best qualities of a brownie and a chocolate snack cake. They are thinner and lighter than fudgy pan brownies, but they still have a moist crumb and deep cocoa flavor in every bite.
The real signature is the frosting. Instead of waiting for a cake to cool completely, you pour a warm chocolate mixture over the warm brownies, allowing it to spread into a glossy, crackly layer that gently settles into the top.
This recipe is also wonderfully practical for parties, bake sales, potlucks, school events, and family gatherings. A 10 x 15-inch jelly-roll pan produces about 24 portions, so there is plenty to share without making multiple batches.
If you enjoy tender baked treats for a crowd, you may also like these soft coffee cake muffins for a breakfast table or afternoon snack.
Ingredients You’ll Need
The brownie batter uses familiar pantry ingredients, but each one has an important job. Flour gives the brownies structure, sugar adds sweetness and tenderness, and baking soda provides a little lift for the cake-like texture.
- All-purpose flour: Use 2 cups and measure it carefully by spooning it into the cup and leveling the top.
- Granulated sugar: Two cups balance the unsweetened cocoa and help keep the crumb tender.
- Unsalted butter, water, and cocoa: These create the warm chocolate mixture that gives the brownies their rich flavor.
- Eggs and sour cream: The eggs bind the batter, while sour cream adds moisture and a soft, delicate crumb.
- Powdered sugar and milk: These form the pourable chocolate frosting that sets on top.
- Pecans or walnuts: One cup is optional, but toasted nuts offer pleasing contrast to the smooth frosting.
For a slightly more polished finish, toast the pecans before chopping them. Let them cool before folding them into the frosting so their crunch remains distinct.
For another cozy bake with a tender crumb, keep our blueberry crumb cake in mind when planning your next dessert spread.
How to Make It Step-by-Step
Step 1: Heat the oven to 350°F (175°C), then prepare a 10 x 15-inch jelly-roll pan. Grease and lightly flour the pan, or line it with parchment so the cooled brownies can be lifted out easily.
Step 2: Add the flour, granulated sugar, baking soda, and salt to a large mixing bowl. Whisk until the ingredients are evenly distributed, breaking up any small pockets of flour or baking soda.
Step 3: Place the butter, water, and unsweetened cocoa powder in a saucepan over medium heat. Warm the mixture until the butter melts and the liquid reaches a brief simmer, then remove it from the heat rather than letting it boil for an extended time.
Step 4: Pour the hot chocolate mixture over the dry ingredients. Stir gently until the batter is mostly combined, taking care not to splash the hot liquid or work the flour more than necessary.
Step 5: Add the eggs and sour cream to the bowl. Mix just until the batter looks smooth and uniform; overmixing can make the finished cake less tender.
Step 6: Transfer the batter to the prepared pan and spread it into an even layer. A spatula helps push the batter into the corners, which keeps the brownies a consistent thickness.
Step 7: Bake for about 20–25 minutes. The edges should look set, the center should yield slightly, and a toothpick inserted in the middle should come out with a few moist crumbs rather than wet batter.
Step 8: While the brownies bake, make the frosting by heating the butter, cocoa powder, and milk in a saucepan. Stir until smooth and just simmering, then remove the pan from the heat.
Step 9: Stir the vanilla extract into the warm chocolate mixture. Add the powdered sugar gradually, stirring until the frosting is smooth, thick enough to coat the brownies, and still easy to pour.
Step 10: Fold in the chopped pecans or walnuts if using. Pour the warm frosting over the warm brownies and spread it quickly with a spatula before it begins to set.
Step 11: Allow the frosted brownies to cool before slicing. Cut the sheet into about 24 squares, wiping the knife between cuts for cleaner edges and a more attractive presentation.
Pro Tips for Moist Brownies
The most important tip is to watch the baking time closely. Texas sheet cake brownies are meant to remain moist, so do not wait for the center to become completely firm or the toothpick to come out perfectly clean.
Use the 10 x 15-inch pan when you want the classic thin sheet-cake shape. A 9 x 13-inch pan also works, but the brownies will be thicker; begin checking around 25 minutes and expect them to need approximately 25–30 minutes.
Warm frosting spreads best over warm brownies. If the frosting thickens too quickly, gentle warmth can help loosen it, but avoid overheating it or the powdered sugar may become difficult to work with.
Do not skip the salt in the batter. Even a small amount sharpens the cocoa flavor and keeps the sweetness from tasting flat.
For a richer nut flavor, toast the pecans before adding them to the frosting. Spread the nuts on a baking sheet and toast them until fragrant, then cool and chop them before stirring them into the topping.
For a seasonal dessert table, pair these brownies with our tender pumpkin loaf. The warm spices and chocolate flavors make a particularly inviting autumn combination.
Storage, Serving & Variations
Let the brownies cool completely before covering them. Store them in an airtight container at room temperature for several days, placing parchment between layers if you are stacking them.
For longer storage, wrap individual squares well and freeze them in a sealed container. Thaw them at room temperature before serving so the frosting can soften naturally and the crumb returns to its tender texture.
Serve the brownies plain, or add a small scoop of vanilla ice cream for a warm-and-cool dessert. A light dusting of extra chopped nuts can also make the frosted surface look festive.
- Nut-free: Leave out the pecans or walnuts and make the frosting plain.
- Extra crunch: Use toasted pecans for a classic Southern-style finish.
- Party portions: Cut smaller squares when serving a large dessert buffet.
- Thicker brownies: Use a 9 x 13-inch pan and allow the longer baking range required for the deeper batter.
If you are assembling a dessert tray, our easy cake batter fudge adds a colorful, candy-like option beside these rich chocolate squares. For a lighter muffin choice, these carrot cake muffins bring a pleasant spiced contrast.
Texas Sheet Cake Brownies Recipe
Ingredients
Method
- Heat the oven to 350°F (175°C). Grease and lightly flour a 10 x 15-inch jelly-roll pan, or line it with parchment paper.
- Whisk the flour, granulated sugar, baking soda, and salt together in a large bowl.
- In a saucepan, heat the butter, water, and cocoa powder until the butter melts and the mixture reaches a brief simmer. Do not boil it for an extended time.
- Pour the hot chocolate mixture over the dry ingredients and stir until mostly combined. Add the eggs and sour cream, mixing just until the batter is smooth.
- Spread the batter evenly in the prepared pan. Bake for about 20–25 minutes, until the center is set and a toothpick comes out with a few moist crumbs.
- For the frosting, heat the butter, cocoa powder, and milk in a saucepan until smooth and just simmering. Remove from the heat, stir in the vanilla and powdered sugar, and fold in the nuts if using.
- Pour the warm frosting over the warm brownies and spread it quickly. Let the brownies cool before cutting them into about 24 squares.
Notes
Final Thoughts
This Texas Sheet Cake Brownies recipe is a dependable way to make a generous batch of tender chocolate squares without complicated techniques. The quick stovetop chocolate mixture gives the brownies their moist, cake-like crumb, while the warm frosting creates the unmistakable finish.
Keep an eye on the center during baking, frost the brownies while they are warm, and let the pan cool before slicing. With those simple details in place, you will have a dessert that looks inviting, travels well, and disappears quickly from the serving table.
Make the nut topping optional to suit your guests, or toast pecans for extra flavor and crunch. However you finish them, these brownies are a wonderfully easy dessert for holidays, potlucks, bake sales, and everyday chocolate cravings.
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