Lemon Lavender Cake: A Bright, Floral Layer Cake Recipe
Common Mistakes to Avoid
- Overmixing the batter: Mix until just combined. Overmixing develops gluten and makes the cake tough.
- Skipping the strain on lemon curd: Even if you whisk carefully, a few bits can sneak through. Straining guarantees a silky texture.
- Using too much lavender: Stick to the ratio above. More lavender doesn't mean more flavor — it means bitter, soapy cake.
- Frosting a warm cake: The buttercream will melt and slide off. Let the cake cool completely, at least 1 hour.
Storage and Serving
This cake keeps well in the refrigerator for up to 3 days. The flavors actually meld and deepen after a day. Let slices sit at room temperature for 15 minutes before serving — the buttercream softens and the lemon curd becomes more fluid.
If you're making this ahead, bake the cake layers and make the curd a day in advance. Wrap the cooled layers tightly in plastic wrap and store at room temperature. Keep the curd in the fridge. Assemble and frost the day you plan to serve.
Takeaway
A great Lemon Lavender Cake is about balance — enough lavender to whisper, not shout, and enough lemon to cut through the sweetness. Use precise ratios, room-temperature ingredients, and a gentle hand with the mixing, and you'll have a cake that feels both elegant and approachable. That's the kind of baking I love: technique that serves the flavor, not the other way around.
Frequently Asked Questions
Can I use dried lavender from a tea bag or garden?
Yes, but ensure it's culinary-grade lavender, not potpourri or decorative lavender, which may contain chemicals. Grind the buds finely to avoid a soapy taste or tough bits in the cake.
Why did my lemon curd turn out lumpy?
Lumpy curd usually means the eggs cooked too quickly or weren't whisked constantly. Keep the heat low (simmer, not boil) and whisk continuously. Straining through a fine-mesh sieve will fix any lumps.
Can I make this cake gluten-free?
Yes, substitute the all-purpose flour with a 1:1 gluten-free baking blend that contains xanthan gum. The crumb may be slightly more tender, so handle with care. For specific dietary needs, consult a qualified professional.
How do I store leftover lemon lavender cake?
Store in an airtight container in the refrigerator for up to 3 days. Let slices sit at room temperature for 15 minutes before serving to soften the buttercream and brighten the flavors.
Recipe: Lemon Lavender Cake
Equipment
- two 9-inch round cake pans
- electric mixer
- fine-mesh sieve
- parchment paper
- cooling rack
- offset spatula
- piping bag
Ingredients
- For the cake: 2 1/2 cups (300g all-purpose flour, 2 teaspoons baking powder, 1/2 teaspoon baking soda, 1/2 teaspoon salt, 1 cup (226g) unsalted butter, softened, 1 3/4 cups (350g) granulated sugar, 4 large eggs, room temperature, 2 teaspoons vanilla extract, 1 tablespoon culinary lavender buds, finely ground, 1 tablespoon lemon zest (from 2 lemons), 1 cup (240ml) buttermilk, room temperature, 1/4 cup (60ml) fresh lemon juice)
- For the lavender buttercream: 1 cup (226g unsalted butter, softened, 4 cups (480g) powdered sugar, sifted, 2 tablespoons heavy cream, 1 teaspoon vanilla extract, 1 1/2 teaspoons culinary lavender buds, finely ground, 2-3 tablespoons milk, as needed)
- For the lemon curd filling: 1/2 cup (120ml fresh lemon juice, 1/2 cup (100g) granulated sugar, 3 large egg yolks, 1 large egg, 4 tablespoons (56g) unsalted butter, cold, cut into pieces, 1/8 teaspoon salt)
Instructions
- Preheat oven to 350°F (177°C). Grease two 9-inch round cake pans, line bottoms with parchment, and dust with flour.
- In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
- In a small bowl, combine ground lavender buds and lemon zest with 1 tablespoon of the sugar; rub together with fingers to release oils. Set aside.
- In a large bowl, beat butter and remaining sugar on medium speed until light and fluffy, about 3 minutes. Add eggs one at a time, beating well after each. Beat in vanilla.
- Reduce speed to low. Add flour mixture in three additions, alternating with buttermilk, beginning and ending with flour. Mix until just combined. Fold in lemon juice and the lavender-zest mixture.
- Divide batter evenly between prepared pans. Bake for 22-25 minutes, until a toothpick inserted in center comes out clean or with a few moist crumbs. Cool in pans 10 minutes, then turn out onto a rack to cool completely.
- For the lemon curd: In a heatproof bowl, whisk lemon juice, sugar, egg yolks, egg, and salt. Set over a pot of simmering water (bowl should not touch water). Whisk constantly until thickened, about 8-10 minutes, reaching 170°F (77°C) on an instant-read thermometer. Remove from heat; whisk in butter pieces until smooth. Strain through a fine-mesh sieve. Press plastic wrap directly onto surface; chill at least 2 hours.
- For the lavender buttercream: Beat butter on medium-high until creamy, about 2 minutes. Gradually add powdered sugar, beating on low. Add cream, vanilla, and ground lavender; beat on medium-high for 3 minutes until light and fluffy. Add milk as needed for spreadable consistency.
- To assemble: Place one cake layer on a serving plate. Spread a thin layer of buttercream, then pipe a ring of buttercream around the edge. Fill center with lemon curd (about 1/3 cup). Top with second layer. Crumb coat, then chill 20 minutes. Apply final coat of buttercream. Decorate as desired.