Welcome to the ultimate guide for creating an irresistibly moist chocolate sheet cake, crowned with a rich, velvety chocolate pecan icing that truly defines decadent! If you’re searching for a dessert that’s both spectacularly delicious and incredibly easy to manage, especially when feeding a crowd, look no further. This classic chocolate sheet cake recipe promises pure goodness in every bite, making it a guaranteed hit for any occasion. Prepare to bake a dessert that will earn you rave reviews and become a cherished family favorite.

Effortless Elegance: The Magic of a Chocolate Sheet Cake
When the guest list grows, or you’re simply craving a generous slice of chocolatey heaven, the thought of an elaborate dessert can feel daunting. That’s where the beauty of a classic Chocolate Sheet Cake shines! It’s my go-to solution for parties, family gatherings, or any event demanding a dessert that’s both universally adored and wonderfully straightforward to prepare. Forget fussing with multiple layers or intricate decorations; this recipe delivers maximum flavor with minimal effort.
Imagine a perfectly moist chocolate cake, so tender it practically melts in your mouth, generously coated with a luscious chocolate pecan icing. This isn’t just any cake; it’s an experience of pure, unadulterated goodness designed to bring smiles to every face. Its generous size means it easily serves a crowd, making it the quintessential choice for celebrations. From birthdays to holidays, or even just a sweet weekend treat, this easy chocolate sheet cake recipe ticks all the boxes. Its rich chocolate flavor, coupled with the satisfying crunch of pecans (if you choose to include them!), creates a symphony of textures and tastes that’s truly unforgettable.

Customizing Your Chocolate Icing: Nuts or No Nuts?
While the rich chocolate pecan icing is a highlight of this recipe, we understand that not everyone is a fan of nuts, or perhaps you just prefer a smoother finish. The beauty of this recipe lies in its flexibility! The chopped pecans in the icing are entirely optional. If you’re not nuts about pecans (pun intended!), or if you need to accommodate allergies, feel free to leave them out entirely. The icing will still be incredibly rich, smooth, and utterly delicious. For those who enjoy a little textural contrast but want to experiment, you could substitute walnuts for pecans, or even sprinkle on some mini chocolate chips for an extra cocoa boost. Whether you go with the classic pecan crunch or opt for a silky, nut-free frosting, this chocolate sheet cake will be a star.
A Treasured Family Tradition: Easy, Decadent, and Always a Hit
This isn’t just a recipe; it’s a culinary legacy. My mom has graced almost every family occasion with this exact cake, and I’ve proudly continued her tradition. Why? Because it’s incredibly easy to make and consistently earns rave reviews. It’s a testament to its deliciousness and simplicity that it has remained a beloved family favorite for generations. There’s a special comfort in baking a cake that you know will be a guaranteed success every time, and this chocolate sheet cake delivers precisely that.
The anticipation of waiting for it to cool (or at least set enough to cut into!) is truly the hardest part. Each bite is an indulgent symphony of deep chocolate flavor, exquisitely moist texture, and that signature rich icing. It’s the perfect decadent dessert to cap off a celebratory meal, a holiday feast, or simply to make an ordinary day feel extraordinary. The joy of sharing this cake with loved ones, watching their faces light up with delight, makes every moment of preparation worthwhile. It’s more than just a cake; it’s a centerpiece for creating cherished memories.

Understanding the Classic: What Exactly is a Sheet Cake?
You might hear it called a slab cake, a sheet cake, or even a Texas Sheet Cake, but they all refer to the same delightful dessert: a cake baked in a large, shallow rectangular pan. Typically ranging from 2 to 3 inches deep, these cakes are ideal for feeding large groups due to their expansive surface area. The standard pan size I use, and one that’s perfect for this recipe, is an 18×13 inch rimmed sheet pan, often referred to as a half-sheet pan or even a jelly roll pan. This size ensures even baking and allows for a generous spread of luscious icing, which is a key characteristic of a great sheet cake.
The intriguing history of the sheet cake, particularly the “Texas Sheet Cake,” suggests its origins are deeply rooted in the Lone Star State. This regional association explains why it’s a perennial favorite at potlucks, church gatherings, and family reunions across the South. What makes it a southern staple? Its combination of simple ingredients, ease of preparation, and ability to generously serve a crowd makes it incredibly practical. Furthermore, the warm, poured icing that melts slightly into the hot cake creates an unparalleled moistness and intense flavor that is characteristic of this beloved dessert. It’s more than just a cake; it’s a celebration of convenience, community, and pure deliciousness.

Explore More Sheet Cake Delights
Once you fall in love with the ease and versatility of baking sheet cakes, you’ll want to explore even more delicious variations. Sheet cakes are a fantastic way to enjoy classic flavors in a format that’s perfect for sharing. Here are some of my other favorite sheet cake recipes, each offering a unique and delightful taste experience:
- Carrot Cake Sheet Cake: This moist and flavorful Carrot Sheet Cake is packed with warm spices and tender carrots, making every scrumptious bite feel like a special occasion.
- Chocolate Chocolate Chip Sheet Cake: For all my fellow chocolate lovers out there, prepare for a double dose of delight! This incredibly moist Chocolate Chocolate Chip Sheet Cake is so amazing it will truly knock your socks off.
- Coconut Cream Sheet Cake: Experience a tropical escape with this delightful cake, featuring coconut oil, coconut milk, and sweetened coconut flakes to make it extra moist, wonderfully coconut-ty, and utterly out-of-this-world delicious!
- Key Lime Sheet Cake: Refreshing and incredibly moist, this cake bursts with tangy lime flavor in both the cake and its vibrant icing. Lime lovers will absolutely adore it!
- Pumpkin Sheet Cake: Indulge in the comforting flavors of pumpkin and spice, baked into a moist, delicious cake that’s perfect for fall gatherings and designed to serve a crowd.

Essential Ingredients for Your Perfect Chocolate Sheet Cake
Crafting this incredible chocolate sheet cake requires a few staple pantry ingredients, each playing a crucial role in achieving its signature moistness and rich flavor. Understanding the function of each component can elevate your baking experience and ensure a consistently delicious result:
- All-purpose flour: The structural backbone of our cake. Sifted flour ensures a lighter, more tender crumb.
- Sugar: Provides sweetness and contributes to the cake’s moist texture and browning.
- Baking soda: Our leavening agent, which reacts with the acidic buttermilk to create a light and airy cake.
- Unsalted butter: Essential for rich flavor and tenderness in both the cake and the icing. Using unsalted butter allows you to control the overall salt content.
- Water: Helps hydrate the dry ingredients and contributes to the liquid base for the cake batter.
- Unsweetened cocoa: The star of the show, providing deep, intense chocolate flavor. High-quality cocoa makes a noticeable difference.
- Eggs: Act as binders, provide structure, and contribute to the cake’s richness and moisture.
- Buttermilk: The secret to an incredibly moist and tender cake. Its acidity reacts with baking soda for a perfect rise and imparts a subtle tang that complements the chocolate beautifully.
- Vanilla extract: Enhances all the other flavors and adds a warm, inviting aroma. Use pure vanilla extract for the best taste.
- Powdered sugar: The base for our smooth, rich icing, dissolving easily to create a velvety texture.
- Chopped pecans (optional): Adds a wonderful nutty crunch and traditional flavor to the icing. Ensure they are finely chopped for easy spreading.
- Large jelly-roll pan (12″ x 17″ x 1″ or 18″x13″ rimmed sheet pan): The ideal vessel for baking a true sheet cake. Its shallow depth and large surface area ensure even baking and that signature sheet cake shape.

Step-by-Step Guide to Making a Super Moist Chocolate Sheet Cake
Baking this chocolate sheet cake is a straightforward process, but following these steps carefully will ensure a perfect, moist result every time. Let’s dive into creating this crowd-pleasing dessert!
- Prepare Your Pan: First, preheat your oven to 400°F (200°C). This ensures the oven is at the correct temperature when the batter goes in, critical for proper rise. Thoroughly grease and flour your large jelly-roll pan (12″ x 17″ x 1″ or an 18″x13″ rimmed sheet pan). This crucial step prevents sticking and ensures your beautiful cake releases cleanly. Set it aside while you prepare the batter.
- Combine Dry Ingredients: In a generously sized bowl, whisk together the all-purpose flour, granulated sugar, and baking soda. Whisking ensures these dry ingredients are well combined and aerated, which contributes to the cake’s light texture.
- Prepare Wet Ingredients (Part 1): In a small saucepan, melt 1 cup of unsalted butter over medium heat. Once melted, add the water and 4 tablespoons of unsweetened cocoa powder. Stir these ingredients together until smooth and well combined.
- Boil and Mix: As soon as the butter, water, and cocoa mixture begins to boil, immediately remove it from the heat. This quick boil helps to “bloom” the cocoa, intensifying its flavor. Promptly pour this hot mixture over your dry ingredients in the large bowl. Using a whisk, stir until everything is just well combined. Be careful not to overmix at this stage.
- Incorporate Remaining Wet Ingredients: Into your cake batter, whisk in the eggs, 1/2 cup of buttermilk, and 1 teaspoon of vanilla extract. The buttermilk adds incredible moisture and tenderness, while the eggs provide structure and richness. Continue whisking until the batter is smooth and uniform.

- Bake the Cake: Carefully pour the chocolate cake batter evenly into your prepared jelly-roll pan. Transfer the pan to the preheated oven and bake for approximately 20 minutes. For even baking, it’s a good idea to rotate the pan halfway through the cooking time. The cake is done when a wooden skewer or toothpick inserted into the center comes out clean or with a few moist crumbs attached.
- Prepare the Icing: While the cake is baking, begin preparing the rich chocolate pecan icing. In a medium saucepan, combine 1/2 cup of unsalted butter, 4 tablespoons of unsweetened cocoa, and 6 tablespoons of buttermilk. Bring this mixture to a boil over medium heat, stirring occasionally to ensure everything melts and combines smoothly.
- Finish the Icing: As soon as the icing mixture reaches a boil, remove it from the heat immediately. Swiftly whisk in the powdered sugar, 1 teaspoon of vanilla extract, and the chopped pecans (if using). Continue whisking until the icing is smooth and free of lumps. The warmth of the mixture will help the powdered sugar dissolve beautifully.

- Ice the Hot Cake: As soon as the cake comes out of the oven, while it’s still hot, pour the warm chocolate pecan icing evenly over the entire surface of the cake. Use an offset spatula or the back of a spoon to spread the icing from edge to edge, ensuring every inch of the moist chocolate cake is covered. Pouring the warm icing over the hot cake allows it to melt slightly and seep into the cake, creating an even moister texture and enhancing the overall flavor.

- Allow to Set: This step is crucial for the best eating experience. Let the chocolate pecan icing set for at least 30 minutes at room temperature before you even think about cutting into slices. This cooling period allows the icing to firm up slightly and develop its rich, luscious texture, ensuring clean cuts and preventing a messy presentation.

Serving and Storing Your Delicious Chocolate Sheet Cake
Ensuring your chocolate sheet cake is served at its best and stored properly will maximize its enjoyment and extend its freshness. Here are some key tips:
Serving Perfection: For the most delightful experience, allow the icing to set for at least 30 minutes (or longer if you prefer a firmer icing) before cutting and serving the cake at room temperature. The flavors of a chocolate cake truly shine when it’s not overly chilled. For an extra touch of indulgence, consider serving slices with a dollop of whipped cream, a scoop of vanilla bean ice cream, or a fresh raspberry on top.
Short-Term Storage: If you’re not planning to serve the entire cake within 8 hours, it’s best to store it in the refrigerator. This helps maintain its freshness and prevents the icing from becoming too soft, especially in warmer environments.
Making it in Advance? This chocolate sheet cake is a fantastic make-ahead dessert. If you’re preparing it a day or two before your event, cover the entire cake tightly with aluminum foil or plastic wrap. Refrigerate it to keep it fresh. About an hour or so before serving, remove the cake from the refrigerator and let it come to room temperature. This allows the cake to soften slightly and its flavors to fully develop, ensuring every bite is moist and delicious. You can also slightly warm individual slices in the microwave for a few seconds for an extra gooey icing experience.
Storing Leftovers: To keep any remaining slices fresh, cover the cake tightly with foil or plastic wrap. It can be stored at room temperature for up to three days. For extended freshness, particularly in humid conditions or if it contains fresh dairy products, keep it in the refrigerator for up to five days. Always ensure it’s well-sealed to prevent drying out.
Freezing for Future Enjoyment: This cake freezes beautifully! First, ensure the cake is completely cool before freezing. For convenience, place individual slices in an airtight, freezer-safe container with a piece of parchment paper between each slice to prevent sticking. This allows you to thaw only what you need. It should keep well in the freezer for up to two months. To thaw, simply transfer the desired number of slices to the refrigerator overnight, loosely covered. You can enjoy them chilled, or let them come to room temperature before serving for optimal texture and flavor.

Share the Joy: Perfect Pairings for Your Celebrations
While this chocolate sheet cake is a masterpiece on its own, it also makes a fantastic addition to a wider spread of celebratory delights. If you’re planning a bigger event, like sending someone off to their next grand adventure, consider complementing this decadent cake with an assortment of other crowd-pleasing dishes. Our Retirement Party Spread is loaded with an enticing array of salads, fluffy biscuits, savory dips, and other sweet treats that will beautifully round out your dessert table and leave a lasting impression.
I hope this recipe inspires you to bake a batch of this incredibly moist and flavorful chocolate sheet cake! It truly is a delightful dessert that brings warmth and happiness to any table. If you’re inspired to make this Chocolate Sheet Cake, please be sure to snap a picture and share it with me @thebakermama on Instagram. I absolutely love seeing your culinary creations and how inspired and creative you all get with the ideas and recipes I share. Your baking adventures truly brighten my day!
xoxo,

Chocolate Sheet Cake
5 Stars 4 Stars 3 Stars 2 Stars 1 Star
5 from 1 review
Author: Maegan – The BakerMama
Prep Time: 20 mins
Cook Time: 40 mins
Total Time: 1 hour
Yield: 25 servings
Category: Dessert, Cake
Description
This super moist chocolate sheet cake is a true showstopper, generously coated in a rich and velvety chocolate pecan icing that is utterly out-of-this-world delicious. Perfect for feeding a crowd, this easy recipe delivers a decadent and classic dessert experience that will become a cherished family favorite for all your celebrations.
Ingredients
For the Cake:
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 1 teaspoon baking soda
- 1 cup (2 sticks) unsalted butter
- 1 cup water
- 4 tablespoons unsweetened cocoa powder
- 2 large eggs
- 1/2 cup buttermilk
- 1 teaspoon pure vanilla extract
For the Chocolate Pecan Icing:
- 1/2 cup (1 stick) unsalted butter
- 4 tablespoons unsweetened cocoa powder
- 6 tablespoons buttermilk
- 1 pound (approximately 3 and 3/4 cups) powdered sugar
- 1 teaspoon pure vanilla extract
- 1 cup pecans, finely chopped (optional, see notes for alternatives)
Instructions
- Prepare the Pan and Preheat Oven: Preheat your oven to 400°F (200°C). Generously grease and flour a large jelly-roll pan (12″ x 17″ x 1″ or an 18″x13″ rimmed sheet pan); set it aside. This prepares the pan for the cake and ensures an easy release.
For the Cake:
- Combine Dry Ingredients: In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, and baking soda until well combined and lump-free.
- Heat Butter Mixture: In a small saucepan over medium heat, melt 1 cup of unsalted butter. Once melted, stir in 1 cup of water and 4 tablespoons of unsweetened cocoa powder until smooth.
- Combine Hot and Dry Mixtures: As soon as the butter, water, and cocoa mixture starts to boil, immediately remove it from the heat. Pour this hot mixture directly over the dry ingredients in the large bowl. Whisk until the ingredients are just combined and smooth, taking care not to overmix.
- Add Remaining Wet Ingredients: Whisk in the 2 eggs, 1/2 cup of buttermilk, and 1 teaspoon of vanilla extract into the batter. Continue whisking until the batter is smooth and uniform.
- Bake the Cake: Pour the prepared batter evenly into the greased and floured jelly-roll pan. Bake for 20 minutes, rotating the pan halfway through the cooking time for even baking. The cake is done when a toothpick inserted into the center comes out clean.
For the Chocolate Pecan Icing:
- Prepare Icing Base: In a medium saucepan over medium heat, combine 1/2 cup of unsalted butter, 4 tablespoons of unsweetened cocoa powder, and 6 tablespoons of buttermilk. Bring the mixture to a rolling boil, stirring frequently.
- Finish the Icing: Quickly remove the saucepan from the heat. Whisk in the 1 pound of powdered sugar, 1 teaspoon of vanilla extract, and the 1 cup of chopped pecans (if using). Whisk until the icing is completely smooth and creamy.
- Ice the Hot Cake: Immediately pour the warm icing over the hot cake, spreading it evenly with an offset spatula or the back of a spoon to cover the entire surface from edge to edge. The warmth of the cake will help the icing meld perfectly.
- Set and Serve: Let the icing set for at least 30 minutes at room temperature before cutting the chocolate sheet cake into slices. This allows the icing to firm up slightly, ensuring clean cuts and a beautiful presentation. Enjoy your decadent creation!
