Bakery Sheet Cake Recipe: Velvet Layers With Buttery Frosting

This bakery sheet cake recipe delivers the kind of velvet layers and buttery frosting you'd expect from a professional patisserie. 💛 The secret lies in precise measurements and gentle folding that creates a tender crumb without being too dense—something even home bakers can master with the right technique.

What sets this recipe apart is the foolproof method for baking perfectly even layers that stay moist for hours. We'll use standard sheet pans and a simple buttercream that's rich enough to hold its shape but light enough to spread smoothly. The key steps—like cooling layers completely and leveling them properly—ensure your cake looks as impressive as it tastes.

By the time you're done, you'll have a cake with layers that are tender yet sturdy, a frosting that's neither too sweet nor too heavy, and a finish that looks like it came straight from a bakery case. The technique is straightforward, but the results are restaurant-quality—no special equipment required.

Whether you're celebrating a birthday, holiday, or just treating yourself, this sheet cake delivers the perfect balance of simplicity and sophistication. Let's get started with the foundation that makes all the difference: the cake layers themselves.

Ingredients for bakery sheet cake

Twelve simple ingredients combine for bakery-style sheet cake layers and velvety buttercream frosting.

The butter and eggs are non-negotiable for that tender crumb. European-style butter like Plugrá or Land O'Lakes has higher fat content, which gives a richer texture. Room temperature is key—cold butter creates pockets, warm butter can overmix. For the eggs, separate whites and yolks carefully; room temperature eggs incorporate more smoothly. The flour should be sifted to avoid dense layers, and King Arthur or Gold Medal brands are reliable for consistent results. If you're in a pinch, sifted cake flour works too, but all-purpose is more accessible.

No vanilla bean paste? Pure vanilla extract works, but the seeds add depth. Short on powdered sugar? Granulated sugar sifted with 1 tsp cornstarch mimics the texture. The lemon zest brightens the frosting—use organic lemons if possible, as conventional ones can taste bitter. For a richer frosting, swap half the milk for heavy cream. The buttercream can be made ahead; just whip it again briefly before using. If it looks grainy, it needs more mixing—stand mixer or hand mixer on high for 2-3 minutes should fix it.

Store cake layers wrapped tightly in plastic at room temperature for up to 2 days. For longer storage, freeze layers between parchment paper for 1 month. The buttercream keeps 3 days refrigerated in an airtight container, or 2 weeks frozen. To reassemble, let layers sit at room temperature for 10 minutes before frosting. For a showstopper finish, dust with powdered sugar or add edible flowers—baby's breath or violets pair beautifully.

Step-by-step instructions for velvet layers with buttery frosting

Here's the professional method for bakery-quality sheet cake with tender layers and ultra-smooth frosting.

Preheat your oven to 350°F and line two 13x18-inch half-sheet pans with parchment paper. In a medium bowl, whisk together the 3 cups all-purpose flour, 1.5 tsp baking powder, and 0.5 tsp salt. Sift this mixture directly into a large mixing bowl to aerate it - this prevents dense cake layers.

In a separate large bowl, cream the 1.5 cups unsalted butter and 2 cups granulated sugar on medium speed until light and fluffy, about 3-4 minutes. Add the 6 whole large eggs one at a time, mixing well after each addition. Scrape down the sides of the bowl to ensure even incorporation. This creaming process creates air pockets that give the cake its tender crumb.

Add the dry ingredients to the wet mixture in 3 additions, alternating with the 1 cup milk. Start and end with the dry ingredients. Mix on low speed just until combined - you should still see small flour streaks. Fold in the 2 tsp vanilla extract and 1 tsp lemon zest until evenly distributed. The batter should be smooth but slightly thick - if it's too stiff, add 1-2 tablespoons milk to achieve proper consistency.

Divide the batter evenly between the prepared pans, spreading it into ¼-inch thick layers using an offset spatula. Tap the pans gently on the counter to remove any air bubbles. Bake for 12-15 minutes until the edges are golden and a toothpick inserted in the center comes out clean. Rotate the pans halfway through baking for even browning.

I press down gently on the cake layers during the first minute of baking - this prevents them from puffing up and ensures even contact with the hot pan. The key here is timing: overbaking dries out the cake, while underbaking leaves it too moist. Remove the cakes immediately when done and let them cool in the pans for 5 minutes before transferring to a wire rack to cool completely.

While the cakes cool, prepare the frosting by beating the 1 cup heavy whipping cream in a chilled bowl until soft peaks form. In a separate bowl, whisk together the 3 cups powdered sugar and 1 tbsp vanilla bean paste until smooth. Gradually fold the powdered sugar mixture into the whipped cream until fully combined and fluffy.

The frosting should be thick but spreadable - if it's too stiff, add 1-2 teaspoons milk to loosen it. This buttercream is designed to be stable at room temperature, so we're not adding any melted butter here. The vanilla bean paste provides that authentic bakery flavor without being overly sweet. Taste and adjust with additional vanilla extract if needed, but be careful - powdered sugar frosting can become overwhelmingly sweet quickly.

Once the cakes are completely cool, place one layer on your serving board or platter. Spread a thin layer of frosting over the top to create a "crumb coat" - this prevents crumbs from getting into your final frosting layer. Chill the cake for 15 minutes in the refrigerator to set the crumb coat.

Spread the remaining frosting evenly over the top layer, then place the second layer on top. Frost the top and sides of the cake smoothly, using an offset spatula to create clean edges. For a bakery-style finish, I like to create a slight dome by building up frosting in the center before spreading outward. Use a bench scraper to create clean, straight edges along the sides of the cake. Sprinkle with additional lemon zest for a bright, professional touch.

Allow the frosted cake to rest at room temperature for 30 minutes before slicing. This resting period lets the frosting set properly and allows the flavors to meld together. The cake will hold its shape better when sliced and serve more cleanly. For best results, slice the cake with a long, sharp serrated knife that's been dipped in hot water and wiped dry - this ensures clean cuts every time.

Each slice should reveal tender, moist layers with a velvety texture and a smooth, creamy frosting that doesn't slide off. The lemon zest adds a subtle brightness that cuts through the richness of the buttercream. Serve immediately for the best experience, as the frosting softens slightly at room temperature. This cake keeps well at room temperature for 2 days or refrigerated for up to 5 days, though the texture will be slightly firmer when cold.

Essential equipment for bakery sheet cake

Half-Sheet Pans

You'll need two 13x18-inch half-sheet pans for this recipe—these are the industry standard for bakery-style sheet cakes. I recommend Wilton Professional Non-Stick Half-Sheet Pans because they distribute heat evenly and release cakes cleanly. If you don’t have these, USA Pan Half-Sheet Pans are another excellent budget-friendly option. Line them with parchment paper to prevent sticking and ensure easy removal. 💛

Mixing Tools

A stand mixer with the paddle attachment is ideal for creaming butter and sugar, but a hand mixer works fine if you're short on time. I use my KitchenAid Artisan Series for its consistent speed control. For folding dry ingredients, a spatula or rubber scraper helps prevent overmixing. A medium mixing bowl (at least 5-quart capacity) ensures enough space for the batter without spilling.

Baking Essentials

An oven thermometer is a game-changer for accuracy—your oven might run hot or cold, and this ensures 350°F is exact. I also recommend a lightweight offset spatula for spreading batter evenly (about ¼-inch thick) and a bench scraper for clean frosting edges. A wire cooling rack prevents soggy bottoms by allowing air circulation while cooling.

Frosting Tools

For the buttercream, a chilled metal bowl is crucial for whipping cream to stiff peaks—plastic bowls can get too warm. A small offset spatula (about 4-inch) helps spread frosting smoothly, while a bench scraper creates those crisp, bakery-style edges. Don’t skip the crumb coat—it’s the secret to a flawless finish. A sieve comes in handy for dusting powdered sugar over the top if you want extra flair.

Knife & Serving

A long, sharp serrated knife (like a Gyuto-style Japanese knife) is essential for clean slices. Dip it in hot water, wipe dry, and slice through the cake at a 45-degree angle for showstopping presentation. For serving, a large wooden board or round cake stand elevates the look—just make sure it’s level to avoid frosting slides.

Frequently asked questions