This soft, dreamy blackberry lavender cake layers tender vanilla cake with sweet-tart blackberry jam and the gentlest hint of floral lavender. I first made this for my sister Karla's garden party last spring, and the purple swirls in the frosting matched her hydrangeas perfectly.
If you love elegant desserts that taste as beautiful as they look, try these Heart Shaped Brownies or this colorful Sprinkle Cake next.
Why You'll Love This Blackberry Lavender Cake
It's easier than it looks. The reverse creaming method might sound complicated, but it just means mixing butter with the dry ingredients first. This creates an ultra-soft crumb that melts in your mouth.
The flavor is subtle and balanced. You get a whisper of lavender, not a mouthful of soap. The blackberry jam keeps things fruity and bright, while the cream cheese frosting adds creamy tang.
It's bakery-beautiful. Those purple frosting swirls and fresh blackberry garnishes make this Blackberry Lavender Cake look like it came from a fancy patisserie.
You can make parts ahead. Both the lavender milk and syrup can be prepped days in advance and stored until you're ready to bake.
Everyone will ask for the recipe. This one's a real showstopper. Pair it with Lemon Shortbread Cookies for a gorgeous dessert spread.
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Blackberry Lavender Cake Ingredients
Here's everything you need to make this floral, fruity Blackberry Lavender Cake from scratch.
See Recipe Card Below This Post For Ingredient Quantities
Lavender Milk
- Whole milk: Creates the base for steeping the lavender and adds moisture to the cake batter.
- Dried culinary lavender: Infuses the milk with gentle floral notes. Make sure you use culinary lavender, not the kind meant for sachets.
Lavender Syrup
- Water: Combines with sugar to create a simple syrup base.
- Granulated sugar: Sweetens the syrup and helps it soak into the cake layers.
- Dried culinary lavender: Adds another layer of aromatic flavor when brushed onto the baked cakes.
Cake
- Sour cream: Keeps the cake incredibly moist and adds a slight tang that balances the sweetness.
- Cake flour: Creates a lighter, more tender crumb than all-purpose flour. Spoon it into your measuring cup and level it off for accuracy.
- Granulated sugar: Sweetens the cake and helps create structure.
- Baking powder: Gives the cake its rise and fluffy texture.
- Salt: Enhances all the other flavors and keeps the sweetness in check.
- Unsalted butter: Adds richness and moisture. Make sure it's softened to room temperature so it blends smoothly with the dry ingredients.
- Pure vanilla extract: Brings warmth and depth to the flavor.
- Large eggs: Bind everything together and add structure. Room temperature eggs mix more evenly into the batter.
Cream Cheese Buttercream & Assembly
- Unsalted butter: Forms the base of the frosting and adds creamy richness.
- Full-fat brick cream cheese: Gives the frosting a tangy flavor and smooth texture. Block cream cheese works better than the spreadable kind.
- Confectioners' sugar: Sweetens and thickens the frosting to the perfect consistency.
- Whole milk: Thins the frosting slightly for easier spreading.
- Pure vanilla extract: Adds classic vanilla flavor.
- Salt: Balances the sweetness in the frosting.
- Blackberry jam: Fills the layers with fruity, sweet-tart flavor. Use your favorite brand or homemade if you have it.
- Purple or mauve food coloring: Optional, but it makes the frosting gorgeously purple.
- Fresh blackberries: Perfect for garnishing the top of the finished cake.
How to Make Blackberry Lavender Cake
Let's build this beautiful Blackberry Lavender Cake step by step, starting with the lavender infusions.
Make the lavender milk: Heat the milk in a small saucepan over low heat until it just starts to simmer. Remove from the heat, stir in the lavender, and let it steep for 20 minutes. Strain out the lavender through a fine-mesh sieve and let the milk cool completely. You can make this a day or two ahead and keep it in the fridge.
Make the lavender syrup: Combine the sugar and water in a saucepan and bring to a boil over medium-high heat. Lower the heat, add the lavender, and let it simmer gently for 10 minutes. Remove from heat and cool completely, then strain out the lavender. This can also be made ahead and stored at room temperature.
Prepare the cake pans: Preheat your oven to 350°F (177°C). Grease three 8-inch round cake pans, line the bottoms with parchment paper, then grease the parchment too. This double-greasing makes removing the cakes so much easier.
Mix the lavender milk and sour cream: Stir the cooled lavender milk and sour cream together in a bowl until smooth and well combined. Set it aside while you work on the dry ingredients.
Combine dry ingredients: Sift the cake flour, sugar, baking powder, and salt into the bowl of a stand mixer. Mix on low speed for just a few seconds to combine everything evenly.
Add butter and lavender mixture: Add the softened butter, vanilla, and half of the lavender milk-sour cream mixture to the dry ingredients. Mix on medium speed for about 1 minute until everything looks moistened and slightly fluffy.
Add eggs and remaining lavender mixture: Whisk the eggs into the remaining lavender milk-sour cream mixture until smooth. Pour this into the batter in three separate additions, mixing for about 15 seconds between each pour. Scrape down the sides of the bowl, then mix for another 15 seconds to make sure everything's incorporated.
Bake the cake layers: Divide the batter evenly between your three prepared pans. Bake for 20 to 22 minutes, or until a toothpick inserted in the center comes out clean. The tops should spring back lightly when touched. Let the cakes cool completely in the pans before turning them out.
Prepare the frosting: Beat the butter and cream cheese together in a large bowl until smooth and creamy. Gradually add the confectioners' sugar, milk, vanilla, and salt, then beat on high speed for about 3 minutes until light and fluffy. If the frosting's too thick, add a little more milk. If it's too thin, add more sugar. You can divide the frosting in half and tint one portion purple if you want a two-tone look.
Assemble the cake: Slice off the domed tops of each cake layer to create flat surfaces. Brush each layer generously with the lavender syrup so it soaks in. Place the first layer on your cake stand and spread a thin layer of white frosting on top. Pipe a ring of frosting around the edge to create a dam, then fill the center with blackberry jam. Add the second layer, repeat the process, then place the third layer on top. Cover the entire cake with a thin crumb coat of frosting and chill for 15 minutes.
Finish frosting: Spread the purple frosting over the top and sides of the chilled cake. Use an offset spatula for smooth sides, or keep it rustic if you prefer. Pipe decorative swirls or borders if you're feeling fancy. Top with fresh blackberries for a gorgeous finish.
Chill and serve: Refrigerate the cake for at least 20 minutes before slicing. This helps the layers hold together and makes cleaner slices.
Substitutions and Variations
No cake flour? You can make your own by measuring 2 and ½ cups of all-purpose flour, removing 5 tablespoons, and replacing them with 5 tablespoons of cornstarch. Sift it together a few times.
Skip the lavender: If floral flavors aren't your thing, use regular whole milk and skip the lavender syrup. The Blackberry Lavender Cake will still be delicious, just more classic vanilla.
Different jam: Raspberry, strawberry, or even lemon curd would be beautiful between the layers instead of blackberry.
Make it a sheet cake: Bake the batter in a 9x13-inch pan for about 30 to 35 minutes and frost the top with a simple layer of buttercream.
Cupcakes instead: Divide the batter into lined cupcake tins and bake for 18 to 20 minutes. Makes about 24 cupcakes.
Equipment For Blackberry Lavender Cake
- Stand mixer or handheld mixer: Makes mixing the batter and frosting so much easier.
- Three 8-inch round cake pans: For those beautiful layers.
- Parchment paper: Prevents sticking and makes removing the cakes foolproof.
- Fine-mesh sieve: Essential for straining out the lavender from the milk and syrup.
- Saucepan: For heating the milk and making the syrup.
- Whisk and spatula: For mixing and scraping down bowls.
- Piping bags and tips: Wilton 1A and 1M tips work great for borders and dams. You can also just use a zip-top bag with the corner snipped off.
- Cake stand or turntable: Makes frosting the Blackberry Lavender Cake much easier, though not absolutely necessary.
How to Store Blackberry Lavender Cake
At room temperature: If your kitchen isn't too warm, you can keep the frosted Blackberry Lavender Cake covered on the counter for up to 1 day.
In the refrigerator: Store the Blackberry Lavender Cake in an airtight container or covered with plastic wrap for up to 5 days. The cream cheese frosting needs to stay cold.
In the freezer: Wrap individual slices tightly in plastic wrap, then aluminum foil, and freeze for up to 3 months. Thaw in the fridge overnight before serving.
Unfrosted layers: You can bake the Blackberry Lavender Cake layers, wrap them tightly, and freeze them for up to 2 months. Thaw and assemble when you're ready.
Serving Suggestions
With fresh berries: Serve slices with a handful of fresh blackberries, raspberries, or blueberries on the side.
Afternoon tea: This Blackberry Lavender Cake is perfect for a spring or summer tea party. Pair it with hot tea or iced lavender lemonade.
Special occasions: Dress it up for birthdays, bridal showers, Easter, or Mother's Day. The purple frosting makes it naturally elegant.
A la mode: A scoop of vanilla ice cream or lemon sorbet alongside a slice takes it over the top.
Expert Tips
Use culinary lavender only. The lavender sold for crafts or sachets can taste bitter and isn't safe to eat. Look for culinary or food-grade lavender at specialty stores or online.
Don't over-steep the lavender. Twenty minutes is the sweet spot. Any longer and the flavor can turn soapy or overpowering.
Room temperature ingredients matter. Make sure your butter, eggs, sour cream, and cream cheese are all at room temperature. Everything blends more smoothly and the texture turns out better.
Brush the syrup generously. Don't be shy with the lavender syrup. It keeps the Blackberry Lavender Cake moist and adds that beautiful floral note throughout.
Chill between steps. After the crumb coat, let the Blackberry Lavender Cake chill so the final frosting layer goes on smoothly without pulling up crumbs.
FAQ
What flavors go well with lavender in baking?
Lavender pairs beautifully with lemon, honey, vanilla, berries (especially blackberry and blueberry), and almond. The key is to keep the lavender subtle so it doesn't overpower the other flavors. A little goes a long way. Mom always says to think of lavender as a background note, not the main event.
What is the most delicious cake in the world?
That's totally personal, but many people consider classic favorites like chocolate cake, red velvet, or tiramisu to be among the best. For me, the most delicious Blackberry Lavender Cake is always the one made with love and shared with people you care about. This blackberry lavender version is definitely up there on my list.
What is the 1234 cake rule?
The 1234 cake rule is an old-fashioned ratio for making pound cake: 1 cup butter, 2 cups sugar, 3 cups flour, and 4 eggs. It's an easy way to remember the proportions. This blackberry lavender cake uses a different method (reverse creaming), but the 1234 rule is a great starting point for simple, classic cakes.
Can you put lavender in a cake?
Yes, absolutely. Culinary lavender adds a subtle floral flavor that's lovely in cakes, cookies, and frostings. The trick is to use just a small amount and steep it in liquid (like milk or syrup) rather than adding it directly to the batter. That way, you get the flavor without the texture of dried flowers in your Blackberry Lavender Cake. Grandma used to say lavender in desserts is like wearing perfume, a little dab is elegant, too much is overwhelming.
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Pairing
These are my favorite dishes to serve with Blackberry Lavender Cake
Blackberry Lavender Cake
Ingredients
Method
- Make the lavender milk: In a small saucepan over low heat, bring the milk to a simmer. Remove from heat and immediately add the lavender. Set aside to steep for 20 minutes. Strain the milk through a fine-mesh sieve and discard the lavender. Cool completely.
- Make the lavender syrup: In a small saucepan over medium-high heat, bring the water and sugar to a boil. Once boiling, reduce the heat to low and add the lavender. Simmer for 10 minutes, then remove from heat and let it steep until cooled. Strain the syrup and discard the lavender. Can be made 1-2 days ahead.
- Make the cake batter: Preheat the oven to 350°F (177°C). Grease three 8-inch cake pans and line with parchment paper. Stir the sour cream and lavender milk together, then set aside.
- Mix the batter: In the bowl of a stand mixer, sift the cake flour, sugar, baking powder, and salt. Beat on low speed for a few seconds. Add butter, vanilla, and half of the lavender milk/sour cream mixture. Mix on medium speed for 1 minute, then scrape down the sides of the bowl.
- Add eggs: Whisk the eggs into the remaining lavender milk/sour cream mixture. Gradually add this egg mixture to the batter in 3 parts, mixing for 15 seconds after each addition. Stop and scrape down the sides of the bowl, then mix for 15 more seconds until fully incorporated. Avoid over-mixing.
- Bake the cake layers: Divide the batter evenly between the cake pans and bake for 20-22 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool completely.
- Prepare the frosting: In a large bowl, beat the butter and cream cheese together until smooth and creamy. Add confectioners' sugar, milk, vanilla, and salt, then mix on low speed. Increase speed and beat for 3 minutes. Adjust thickness with more sugar or milk if necessary.
- Assemble the cake: Place the first cake layer on your cake stand. Spread a thin layer of frosting, then pipe a ring of frosting along the edge. Add blackberry jam in the center. Top with a second cake layer and repeat. Finish with the third layer and cover the cake with a crumb coat of frosting. Chill for 15 minutes.
- Spread the purple frosting over the top and sides of the cake. If desired, pipe decorative designs with any remaining frosting.
- Chill and serve: Refrigerate the cake for at least 20 minutes before slicing to help it hold its shape.
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