Raspberry Cake With Lemon Buttercream
This Raspberry Cake with Lemon Buttercream features a tender, buttermilk-infused crumb swirled with jammy raspberries, topped with a silky, zesty frosting.
- Cornstarch Barrier: Tossing the fresh raspberries in cornstarch absorbs initial moisture release, preventing them from sinking and creating soggy pockets.
- Buttermilk Acidity: The natural acid in buttermilk weakens gluten bonds, ensuring an incredibly tender, velvety crumb that stays moist for days.
- Silky Emulsion: Whipping real unsalted butter for a full five minutes before adding sugar creates a stable, cloud-like buttercream that won't weep or separate.
I still remember the hot July afternoon I dropped an entire raspberry layer cake face-down onto my kitchen floor, just three hours before my sister’s baby shower. My knees hit the linoleum as I stared at the pink-smeared disaster.
I scraped up what I could, cried a little, and swore off baking with fresh berries forever.
But my stubbornness got the best of me, because fresh raspberries are notoriously difficult to bake into a standard cake batter without turning the crumb into a soggy, purple-grey swamp. Bear with me here, because when those delicate berries heat up, their cellular walls collapse, releasing a flood of acidic juice that completely wrecks the delicate protein matrix of your flour. I tested this with four different flour brands, and cheap store-brand all-purpose flour failed every single test because its lower protein content couldn't support the heavy, wet fruit pockets.
The simple fix is twofold: we coat the berries in cornstarch to absorb excess moisture, and we use buttermilk to tenderize the gluten. This starch gelatinization creates a protective barrier around each berry, keeping them suspended in the batter instead of sinking to the bottom of the pan.
Trust me on this one, it works beautifully.
If you love the bright, citrusy punch of lemon in your bakes, you should definitely try my Lemon Coffee Cake or these classic, ultra-tart Lemon Bars.
For another elegant berry option, my White Chocolate Raspberry Tiramisu is an absolute showstopper.
Raspberry Cake With Lemon Buttercream
Ingredients
- 3 cups (360g) all-purpose flour
- 1 tablespoon baking powder
- 1/2 teaspoon baking soda
- 1 teaspoon Diamond Crystal kosher salt
- 1 cup (226g) unsalted butter, room temperature
- 1 3/4 cups (350g) granulated sugar
- 4 large eggs, room temperature
- 1 tablespoon vanilla extract
- 1 cup buttermilk, room temperature
- 2 cups fresh raspberries
- 1 tablespoon cornstarch
- 1 1/2 cups (339g) unsalted butter, softened (for frosting)
- 5 cups (600g) powdered sugar
- 3 tablespoons fresh lemon juice
- 1 tablespoon lemon zest
- 2 tablespoons heavy cream
Directions
- Preheat your oven to 350°F (175°C). Grease and flour three 8-inch round cake pans, or line the bottoms with parchment paper rounds.
- In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and kosher salt. In a separate small bowl, gently toss the fresh raspberries with the cornstarch until they are evenly coated.
- In a stand mixer fitted with the paddle attachment, beat the 1 cup of room temperature butter and granulated sugar on medium-high speed for a full 5 minutes until pale and fluffy. Scrape the bowl until your wrist clicks to ensure no unmixed butter clings to the bottom.
- Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract until fully incorporated.
- With the mixer on low speed, alternate adding the dry flour mixture and the buttermilk in three batches, starting and ending with the dry ingredients. Gently fold in the starch-coated raspberries by hand using a rubber spatula to avoid crushing them.
- Divide the batter evenly among your prepared cake pans. Bake for 30 to 35 minutes, or until a toothpick inserted into the center of the cakes comes out clean. Cool completely in the pans before turning out.
- To make the buttercream, beat the 1 1/2 cups of softened butter in a clean mixer bowl for 3 minutes until creamy. Gradually add the powdered sugar, lemon juice, lemon zest, and heavy cream, beating on high speed until the frosting is light, fluffy, and spreadable.
- Place the first cake layer on a serving plate, spread a thick layer of lemon buttercream over the top, and repeat with the remaining layers. Frost the outside of the cake and decorate with extra fresh raspberries.
Notes
- Salt Conversion: This recipe specifies Diamond Crystal kosher salt. If you are using fine table salt or standard grocery store salt, cut the measurement in half to 1/2 teaspoon to avoid an overly salty crumb.
- The Science of Buttermilk: The natural lactic acid in buttermilk breaks down tough gluten strands in the flour. This hands down guarantees a velvety, melt-in-your-mouth texture that balances the heavy moisture of the fresh berries.
- Workflow Warning: Watch your oven closely starting at the 28-minute mark. Overbaking will dry out the delicate crumb and turn the raspberries into bitter, chewy pockets that ruin the cake's texture.
- Storage Behavior: This cake actually tastes better on day two because the raspberry moisture redistributes through the crumb. However, the buttercream will firm up significantly in the fridge, so always let slices sit out before eating.
- Berry Prep: If you decide to wash your raspberries, do it hours in advance and let them dry completely on paper towels. Any lingering water on the berries will make them sink and turn the batter soggy, which got annoying fast during my early test batches.
Serving Suggestions
This cake is a celebration of bright, summery flavors that pairs beautifully with light, refreshing accompaniments. Serve it at your next backyard gathering or afternoon tea to truly let the citrus and berry notes shine.
- A dollop of lightly sweetened whipped cream to balance the tart lemon buttercream.
- A glass of chilled prosecco or dry champagne for a festive, bubbly pairing.
- A side of fresh, macerated strawberries or blueberries to lean into the berry theme.
- A warm cup of Earl Grey tea, which complements the citrus zest beautifully.
- A scoop of premium vanilla bean ice cream for an indulgent dessert experience.
Storage and Reheating
Store this cake in an airtight cake keeper in the fridge for up to four days. Because of the fresh fruit, leaving it on the counter for more than a day is a recipe for mold.
Always bring it to room temperature before serving.
Cold butter frosting tastes like sweetened candle wax. Give it at least 45 minutes on the counter so the buttercream can soften back into its silky, cloud-like state.
To freeze, wrap individual unfrosted layers tightly in plastic wrap and heavy-duty aluminum foil for up to three months. Thaw overnight in the refrigerator before assembling and frosting.
Ingredient Substitutes
If you find yourself missing an ingredient, don't panic—here are the best swaps that won't ruin your cake.
- Buttermilk: Mix 1 cup of whole milk with 1 tablespoon of lemon juice or white vinegar and let sit for 5 minutes.
- Fresh Raspberries: You can swap in fresh blackberries or blueberries, but avoid strawberries unless you chop them very small.
- Lemon Juice: Fresh lime juice works beautifully for a zesty, tropical twist on the buttercream.
- All-Purpose Flour: Cake flour can be used 1:1 by weight (360g) for an even lighter, tighter crumb structure.
Go put on some music, grab your lemons, and don't worry if your layers aren't perfectly straight. The best cakes are the ones eaten with laughter and slightly messy fingers.
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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