Pumpkin Texas Sheet Cake with Buttermilk Frosting – Your new favorite casual treat for holiday gatherings, bursting with alluring fall flavors!


Why This Pumpkin Sheet Cake Will Become Your Fall Favorite
Prepare to fall in love with your new go-to pumpkin dessert! This incredible Pumpkin Texas Sheet Cake with Buttermilk Frosting isn’t just a recipe; it’s an experience. Imagine an ultra-moist, perfectly spiced pumpkin cake, generously blanketed in a light, fluffy, and delightfully tangy buttermilk frosting. It’s the ultimate combination of cozy autumn flavors and a crowd-pleasing size, making it ideal for any festive occasion or casual family gathering.
What makes this particular Buttermilk Pumpkin Cake so special? Every bite delivers a harmonious blend of sweet pumpkin, warm cinnamon, aromatic nutmeg, and a hint of zesty ginger, all beautifully complemented by the subtle tang of buttermilk. This buttermilk “twang” isn’t just a flavor note; it cuts through the sweetness, providing a vibrant balance that elevates the entire dessert. The cake itself boasts an incredibly tender and fluffy texture, a result of careful ingredient ratios and baking techniques, ensuring it remains moist for days.
Designed for generosity, our Pumpkin Sheet Cake with Buttermilk Frosting is baked in an extra-large sheet pan, yielding an impressive 32 substantial slices – or up to 64 mini pieces if you’re serving a massive crowd. This makes it the perfect centerpiece for holiday feasts, school events, office parties, or any large get-together where you want to impress without the stress of individual desserts. If a full-sized sheet cake is too much for your needs, or if you prefer a standard 9×13 inch baking dish, simply reduce all ingredients by one-third for a perfectly scaled smaller batch.
Whether you’re celebrating Thanksgiving, Halloween, or simply enjoying the crisp air of autumn, this cake promises to bring warmth and joy to your table. Its casual elegance means it’s fuss-free yet always impressive, a true testament to classic American baking at its best.

Essential Ingredients for Your Buttermilk Pumpkin Sheet Cake
Crafting this delightful pumpkin cake requires a few key ingredients, each playing a crucial role in achieving its signature flavor and texture. Here’s a detailed look at what you’ll need and why:
- All-Purpose Flour: The foundation of our cake. For best results, use a high-quality all-purpose flour. If you’re looking for a gluten-free alternative, a 1-to-1 gluten-free baking mix can often be substituted successfully.
- Pumpkin Pie Spice: This convenient blend is your shortcut to authentic fall flavor, combining cinnamon, nutmeg, ginger, and cloves. If you prefer to mix your own, combine 1 tablespoon ground cinnamon, 1/2 teaspoon ground nutmeg, 1/2 teaspoon ground ginger, and 1/2 teaspoon ground clove or allspice. Freshly ground spices always offer a more vibrant aroma and taste.
- Granulated and Light Brown Sugar: The combination of these two sugars creates a complex sweetness and contributes to the cake’s incredible moisture and rich flavor profile. Granulated sugar provides structure, while brown sugar adds depth and a tender crumb.
- Unsalted Butter: Always opt for unsalted butter in baking. This allows you to control the salt content in your recipe precisely, ensuring a consistent and delicious outcome every time. Make sure it’s softened to room temperature for optimal creaming.
- Room Temperature Eggs: Eggs at room temperature emulsify better with other ingredients, leading to a smoother, more uniform batter and a lighter, fluffier cake. Cold eggs can cause the butter to seize, resulting in a denser texture.
- Pumpkin Puree: The star ingredient! Be sure to use 100% pure canned pumpkin puree, not pumpkin pie filling, which contains added sugars and spices that will alter the recipe’s balance.
- Whole Buttermilk: This is essential for the cake’s tenderness and the frosting’s signature tang. Whole fat buttermilk contributes to the best possible texture and flavor. The acidity reacts with baking soda, producing a light and airy crumb.
- Baking Powder, Baking Soda, Salt, and Vanilla Extract: These are the unsung heroes of baking. Baking powder and baking soda provide lift and a tender texture. Salt enhances all the flavors, balancing the sweetness. Pure vanilla extract adds a layer of warmth and complexity.
- Powdered Sugar: The key to a smooth, sweet, and perfectly fluffy buttermilk frosting. Its fine texture dissolves easily, creating a silky topping.
Gathering your ingredients and ensuring they are at the correct temperature (especially butter and eggs) is the first step towards baking success. This careful preparation ensures your cake turns out moist, flavorful, and absolutely irresistible.




Crafting Your Perfect Pumpkin Sheet Cake: A Step-by-Step Guide
Making this Pumpkin Texas Sheet Cake is surprisingly straightforward, even for beginner bakers. Follow these key steps to achieve a perfectly moist cake and a luscious frosting:
- Prepare Your Baking Pan: Properly greasing and flouring your sheet pan ensures an easy release and beautifully baked cake edges. Don’t skip this crucial step!
- Measure Your Ingredients Accurately: Precision is important in baking. Use proper measuring cups and spoons, and for flour, spoon it into the cup and level it off.
- Cream Butter and Sugar to Perfection: This step is vital for the cake’s light and fluffy texture. Creaming the softened butter with both types of sugar for an extended period incorporates air and helps dissolve sugar crystals.
- Alternate Wet and Dry Ingredients: Mixing flour and pumpkin puree alternately ensures a smooth, well-combined batter without overmixing, which can lead to a tough cake.
- Bake Undisturbed: Resist the urge to open the oven door! Maintaining a consistent oven temperature is key for an even rise and thorough bake.
- Cool Thoroughly and Whip the Frosting: A completely cooled cake is essential before frosting to prevent melting. While the cake cools, prepare your light and airy buttermilk frosting.
- Generously Slather on the Frosting: Don’t be shy! Spread that tangy-sweet frosting evenly over the cooled cake for the ultimate finish.
For the complete Buttermilk Pumpkin Cake Recipe, including exact ingredient proportions, detailed instructions, and helpful tips, please refer to the comprehensive recipe card below.

Elevate Your Cake: Possible Add-Ins and Adjustments
While this Pumpkin Texas Sheet Cake is perfect as is, it’s also wonderfully adaptable! Feel free to customize it with these delicious add-ins or adjustments to suit your taste:
- Chocolate Chips: Stir in a cup or two of your favorite chocolate chips (semi-sweet, milk, or white chocolate) for an extra layer of indulgence.
- Cinnamon Chips: For an even more intense spice flavor, consider adding cinnamon chips to the batter.
- Crystallized Ginger Chunks: A fantastic addition for those who love a bit of candied spice and texture.
- Chopped Nuts: Incorporate chopped pecans or walnuts into the batter for a delightful crunch and nutty flavor. You can also sprinkle them on top of the frosting.
- Extra Vanilla Extract: Boost the aromatic profile of your cake by adding an extra 1-2 teaspoons of pure vanilla extract to the batter or frosting.
- Exotic Spices: For a unique twist, substitute the pumpkin pie spice with Indian Garam Masala, which offers a warm, earthy, and slightly sweet spice blend.
- Frosting Alternatives: If buttermilk frosting isn’t your preference, skip it and spread a rich layer of Nutella chocolate hazelnut spread over the cooled cake for a decadent alternative. Cream cheese frosting is another classic pairing with pumpkin.
Perfect Pairings: Serving Suggestions
This Pumpkin Texas Sheet Cake is versatile enough to complement a variety of meals, whether it’s a grand holiday feast or a simple weeknight dessert. Here are some ideas for serving it:
- Serve alongside a hearty holiday meal featuring dishes like our Texas-Style Oven Brisket.
- Pair with classic sides such as The Best Potato Salad Recipe Ever and Creamy Southwest Ranch Pasta Salad.
- For an extra indulgent dessert experience, serve a slice warm with a scoop of our Easy Homemade Vanilla Ice Cream.
- Offer it with a cup of hot coffee, tea, or cider for a comforting autumn treat.

Print Recipe
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Buttermilk Pumpkin Sheet Cake Recipe
20 minutes
45 minutes
1 hour 5 minutes
32 pieces
Video
A video tutorial demonstrating how to make this delicious Pumpkin Texas Sheet Cake with Buttermilk Frosting is available here.
Ingredients
For the Pumpkin Texas Sheet Cake:
- 3 cups all-purpose flour (+ extra for pan)
- 1 1/2 tablespoons pumpkin pie spice
- 1 1/2 teaspoons baking powder
- 1 1/2 teaspoons baking soda
- 1 1/2 teaspoons salt
- 1 1/2 cups granulated sugar
- 1 1/2 cups light brown sugar
- 1 1/2 cups softened unsalted butter
- 6 eggs, room temperature
- 28 ounces canned pumpkin puree (not pumpkin pie filling)
For the Buttermilk Frosting:
- 1 cup unsalted butter, softened
- 1/2 cup whole buttermilk
- 1 teaspoon vanilla extract
- 1/2 teaspoon salt
- 5+ cups powdered sugar
Instructions
For the Pumpkin Texas Sheet Cake:
- Set out all butter to soften. Crack the eggs into a bowl so they can warm to room temperature. Preheat the oven to 350 degrees F (175 C). Butter a large 15 1/2 x 10 1/2-inch deep-sided jelly roll pan (also known as an XL baking pan or roasting pan). Then sprinkle the pan with flour to coat the bottom and sides thoroughly. Shake out any excess flour.
- Stir the flour well before measuring to ensure it’s light and aerated. In a medium bowl, whisk together the measured flour, pumpkin pie spice, baking powder, baking soda, and salt until well combined.
- In the bowl of an electric stand mixer fitted with the paddle attachment, combine the softened butter and both granulated and light brown sugars. Cream the butter and sugar mixture on low speed initially, then increase to high. Beat for 4-5 minutes until the mixture is light, fluffy, and the sugar crystals have begun to break down into the butter. This creaming process is crucial for a light and tender cake texture.
- Stop the mixer and scrape down the sides of the bowl with a spatula. Gradually beat in the room temperature eggs, one at a time, incorporating each egg fully before adding the next. Scrape the bowl again. Turn the mixer to low speed and alternate adding the dry flour mixture and the pumpkin puree, beginning and ending with the flour mixture. Mix just until combined and the batter is smooth; do not overmix. Turn off the mixer as soon as the batter comes together.
- Gently scoop the pumpkin cake batter into your prepared sheet pan and spread it out evenly with an offset spatula. Bake for 45-50 minutes, or until the center of the cake is puffy, springs back when lightly touched, and a wooden toothpick inserted into the middle comes out clean. It’s important not to open the oven door until the timer goes off to ensure proper baking.
- Once baked, remove the cake from the oven and allow it to cool completely on a wire rack before proceeding to frost it. For faster cooling, you may carefully place the pan in the refrigerator.
For the Buttermilk Frosting:
- Ensure the mixer bowl is clean. Place the softened unsalted butter in the bowl of a stand mixer fitted with a whip attachment. Whip on high speed until the butter is very light and fluffy, usually for 2-3 minutes. Then, reduce the mixer speed to medium-low and incorporate the buttermilk, vanilla extract, and salt.
- Gradually add the powdered sugar, one cup at a time, until at least five cups have been fully incorporated. Once added, increase the mixer speed to high and whip the frosting for another 2-3 minutes to remove any clumps and create a light, smooth consistency. Check the consistency; if a thicker frosting is desired, add another 1/2 to 1 cup of powdered sugar, scraping the bowl and whipping again until perfectly smooth.
- Evenly spread the prepared buttermilk frosting over the top of the completely cooled pumpkin spice cake using an offset spatula. For an extra touch of flavor and visual appeal, sprinkle with additional pumpkin pie spice or ground cinnamon. Cut the cake into 32 generous pieces. Cover the cake until you are ready to serve to maintain freshness.
Notes
Nutrition Information
Serving: 1 piece
Calories: 342 kcal
Carbohydrates: 49g
Protein: 2g
Fat: 15g
Saturated Fat: 9g
Cholesterol: 69mg
Sodium: 219mg
Potassium: 118mg
Fiber: 1g
Sugar: 38g
Vitamin A: 4355 IU
Vitamin C: 1.1mg
Calcium: 40mg
Iron: 1.2mg
Dessert
American
Sommer Collier
Explore More Amazing Pumpkin Desserts
If you’ve fallen in love with this Pumpkin Texas Sheet Cake, you’re in for a treat! The world of pumpkin desserts is vast and delicious. Here are some more incredible pumpkin-inspired recipes to satisfy your autumn cravings:
- Pumpkin Skillet Blondies: A warm, gooey, and spiced treat perfect for a cozy night.
- Libby’s Pumpkin Pie Recipe: The timeless classic, perfected for your holiday table.
- Pumpkin Slab Pie: A fantastic alternative to traditional pie, great for feeding a crowd.
- Turtle Pumpkin Ice Cream Cake: A decadent, layered dessert that’s both cool and spiced.
- Pumpkin Cream Pie: A lighter, creamier take on classic pumpkin pie, no baking required!
- Layered Pumpkin Cheesecake Bars: Rich cheesecake meets spiced pumpkin in easy-to-serve bars.
- Best Pumpkin Muffin Recipe: Fluffy, spiced muffins perfect for breakfast or a snack.
- Pumpkin Milkshake: A creamy, dreamy indulgence that tastes like pie in a glass.
- Pumpkin Pie Smoothie (Protein Shake): A healthy and delicious way to enjoy pumpkin flavors.
- Don’t forget to check out all our Thanksgiving Recipes for a complete holiday menu!
- Curious about buttermilk? Learn How To Make Buttermilk Here!