Strawberry Shortcake Slab Cake
This easy strawberry shortcake slab cake features a tender buttermilk sponge topped with stabilized vanilla whipped cream and sweet macerated fresh strawberries, making it the perfect crowd-pleasing summer dessert.
- Buttermilk's acidity weakens the gluten protein matrix, ensuring a tender, melt-in-your-mouth crumb that never gets tough.
- Macerating the strawberries in sugar draws out their natural juices via osmosis, creating a glossy, built-in syrup that moistens the cake.
- A touch of cornstarch in the whipped cream stabilizes the dairy emulsion, preventing the topping from weeping or melting in warm weather.
My first attempt at a summer slab cake ended with me scraping a soggy, deflated sponge off a warped aluminum sheet pan while my sister watched in silent, pitying horror.
I had tried to scale up a traditional biscuit-style shortcake, but the physics of a giant sheet pan completely crushed the delicate rise.
Standard shortcake dough relies on pockets of cold butter steam to lift the heavy flour matrix, which works beautifully in small rounds but collapses under its own thermal mass when baked as a massive slab.
Cheap, thin aluminum pans also heat unevenly, scorching the bottom before the center even thinks about setting.
The fix is surprisingly simple: we swap the dense biscuit dough for a high-moisture buttermilk sponge cake that mimics the tender crumb of a classic shortcake while maintaining structural integrity.
While I adore individual strawberry shortcake cups for small dinners, this slab version is my absolute go-to for feeding a crowd.
Trust me on this one.
This base holds up beautifully under a mountain of juicy berries and freshly whipped cream without turning into a mushy disaster.
To test if the cake is done, press your fingertip lightly into the center of the sponge; it should bounce back instantly like a firm mattress.
Strawberry Shortcake Slab Cake
Ingredients
- 325g all-purpose flour
- 1 1/2 tsp baking powder
- 1/2 tsp baking soda
- 1 tsp Diamond Crystal kosher salt
- 170g unsalted butter, softened to room temperature
- 300g granulated sugar
- 3 large eggs, room temperature
- 1 tbsp vanilla extract
- 240ml buttermilk, room temperature
- 900g fresh strawberries, hulled and sliced
- 50g granulated sugar (for the strawberries)
- 480ml heavy whipping cream, cold
- 30g powdered sugar
- 1 tbsp cornstarch
Directions
- Preheat your oven to 350°F (175°C). Grease a 13x9-inch metal baking pan and line the bottom with parchment paper, leaving an overhang on the sides for easy removal.
- In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and Diamond Crystal kosher salt. Set aside.
- In a stand mixer fitted with the paddle attachment, beat the softened butter and 300g of granulated sugar on medium-high speed until light and fluffy, about 4 minutes.
- Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract.
- Reduce the mixer speed to low. Alternate adding the dry ingredients and the buttermilk in three batches, beginning and ending with the flour mixture, until just combined.
- Spread the batter evenly into your prepared pan. Bake for 22 to 25 minutes, or until a toothpick inserted into the center comes out clean. Cool completely in the pan.
- While the cake cools, toss the sliced strawberries with 50g of granulated sugar in a bowl. Let them sit at room temperature for 15 minutes to macerate and release their glossy juices.
- In a cold bowl, whip the heavy cream, powdered sugar, vanilla extract, and cornstarch together until medium-stiff peaks form.
- Spread the stabilized whipped cream over the cooled cake, pile the macerated strawberries on top, and drizzle with the accumulated juices before slicing. </
Notes
- Always use Diamond Crystal kosher salt; if you are using Morton's, cut the volume measurement in half to avoid an overly salty sponge.
- Macerating the strawberries draws out moisture through osmosis, which concentrates the fruit flavor and creates a natural syrup that acts as a moisture barrier for the sponge.
- Do not whip the cream until the cake is completely cool to the touch, or the residual heat will melt the fat emulsion and turn your topping into a runny puddle.
- After a day in the fridge, the cake actually absorbs the strawberry syrup, making it taste remarkably like a traditional soaked trifle, though the whipped cream will lose some volume.
Serving Suggestions
This slab cake is built for backyard gatherings and casual summer entertaining. Here is how to make it shine on your dessert table:
- Serve alongside a batch of cold brew or a refreshing strawberry latte to balance the sweet cream.
- Dust the top with a tiny pinch of fresh lemon zest right before slicing to cut through the dairy richness.
- Pair with a scoop of strawberry vanilla bean ice cream for an over-the-top double-strawberry experience.
- Slice into clean squares using a warm, dry chef's knife, wiping the blade clean between each cut.
Storage and Reheating
Store any leftovers in the refrigerator, tightly covered with plastic wrap or in an airtight container.
Because of the fresh fruit and dairy, it must be kept cold and is best consumed within two days.
Do not freeze the fully assembled cake.
The freezing process breaks down the cellular structure of the strawberries, turning them into a mushy, watery mess upon thawing.
If you want to make this ahead, bake the sponge, wrap it tightly in plastic wrap, and freeze the plain cake for up to a month.
Ingredient Substitutes
Need to swap something out? Here are the best tested alternatives for this recipe:
- Buttermilk: Mix 240ml of whole milk with 1 tablespoon of lemon juice or white vinegar and let it sit for 5 minutes before using.
- Strawberries: Swap in fresh peaches or blackberries if you want to try a different fruit profile, similar to a brown butter peach cobbler.
- Heavy Cream: Use a stabilized coconut cream whipped topping for a dairy-free alternative on the frosting.
There is something incredibly satisfying about bringing a massive, beautiful slab cake to a table full of hungry friends. It is messy, it is glorious, and it tastes exactly like summer should.
Susan Rosie
I've spent over 12 years perfecting recipes so you can cook with confidence. Every dish on Storied Skillet is tested multiple times – because your dinner matters. I believe in simple ingredients, clear instructions, and big flavors.
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