This Lemon Blueberry Shortbread Mousse Cake is the perfect dessert for any occasion, whether you’re hosting a summer gathering or simply treating yourself to a sweet delight. The combination of zesty lemon mousse, luscious blueberry compote, and a buttery shortbread crust creates a harmonious balance of flavors that will leave everyone asking for seconds. With its refreshing taste and elegant presentation, this cake is sure to impress your guests or make any day feel special.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Shortbread Crust:
- For the Lemon Mousse:
- For the Blueberry Compote:
- How to Make Lemon Blueberry Shortbread Mousse Cake
- Step 1: Prepare the Shortbread Crust
- Step 2: Create the Lemon Mousse
- Step 3: Assemble and Chill
- Step 4: Prepare Blueberry Compote (Optional)
- Step 5: Serve Your Cake
- How to Serve Lemon Blueberry Shortbread Mousse Cake
- Fresh Berries
- Whipped Cream
- Lemon Zest Garnish
- Mint Leaves
- Ice Cream
- Chocolate Drizzle
- How to Perfect Lemon Blueberry Shortbread Mousse Cake
- Best Side Dishes for Lemon Blueberry Shortbread Mousse Cake
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Lemon Blueberry Shortbread Mousse Cake
- Reheating Lemon Blueberry Shortbread Mousse Cake
- Frequently Asked Questions
- How do I make Lemon Blueberry Shortbread Mousse Cake?
- Can I use frozen blueberries?
- How long does it take to prepare this dessert?
- What makes this Lemon Blueberry Shortbread Mousse Cake unique?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Refreshing Flavor: The bright lemon and sweet blueberries create a deliciously balanced taste that is perfect for warm weather.
- Elegant Presentation: This dessert not only tastes great but also looks stunning, making it ideal for gatherings and celebrations.
- Easy to Make: With simple steps and easy-to-find ingredients, you can whip up this cake without any stress.
- Versatile Dessert: Perfect for summer picnics, birthday parties, or just as a delightful treat at home.
- Impressive Texture: The creamy mousse paired with the crunchy shortbread crust provides an exciting contrast in every bite.
Tools and Preparation
To create the perfect Lemon Blueberry Shortbread Mousse Cake, you’ll need some essential tools in your kitchen. These tools will help ensure a smooth preparation process.
Essential Tools and Equipment
- Food processor
- Mixing bowls
- Rubber spatula
- 9-inch springform pan
- Whisk
Importance of Each Tool
- Food processor: Speeds up mixing dry ingredients for the crust, ensuring even texture.
- Mixing bowls: Necessary for combining ingredients and keeping your workspace organized.
- Rubber spatula: Ideal for folding ingredients gently without deflating whipped cream.
- 9-inch springform pan: Allows for easy removal of the cake once set, giving it a professional look.
Ingredients
For the Shortbread Crust:
- 1 1/2 cups all-purpose flour
- 1/2 cup powdered sugar
- 1/2 cup unsalted butter, cold and cubed
- Pinch of salt
For the Lemon Mousse:
- 1 cup heavy cream
- 1/2 cup granulated sugar
- Zest of 2 lemons
- 1/2 cup fresh lemon juice
- 1 tablespoon gelatin powder
- 2 tablespoons water
For the Blueberry Compote:
- 8 ounces cream cheese, softened
- 2 cups fresh blueberries
- 1/4 cup granulated sugar
- 1 tablespoon fresh lemon juice
How to Make Lemon Blueberry Shortbread Mousse Cake
Step 1: Prepare the Shortbread Crust
- Combine the all-purpose flour, powdered sugar, unsalted butter, and a pinch of salt in a food processor. Pulse until the mixture resembles coarse crumbs.
- Press the mixture evenly into the bottom of the prepared pan and bake for 15-18 minutes, or until lightly golden. Allow it to cool completely.
Step 2: Create the Lemon Mousse
- Heat the lemon juice over low heat in a saucepan until warm.
- Stir in the bloomed gelatin until dissolved. Allow this mixture to cool to room temperature.
- In a mixing bowl, beat together the heavy cream, granulated sugar, and lemon zest until stiff peaks form.
- In another bowl, whip the cream cheese until smooth. Gradually add in the cooled lemon juice mixture while continuing to beat until smooth.
- Gently fold in the whipped cream until fully incorporated.
Step 3: Assemble and Chill
- Pour the lemon mousse over the cooled shortbread crust in the springform pan.
- Refrigerate for at least 4 hours or until set.
Step 4: Prepare Blueberry Compote (Optional)
- In a small saucepan over medium heat, combine fresh blueberries with sugar and additional lemon juice. Cook until bubbly and thickened slightly.
Step 5: Serve Your Cake
- Before serving, run a knife around the edge of the pan to loosen the cake.
- Carefully remove the sides of the springform pan; slice and serve chilled with blueberry compote on top if desired.
Enjoy every delicious bite of your Lemon Blueberry Shortbread Mousse Cake, perfect for any occasion!
How to Serve Lemon Blueberry Shortbread Mousse Cake
Serving the Lemon Blueberry Shortbread Mousse Cake can elevate any occasion. This dessert pairs well with various accompaniments that enhance its flavors and presentation.
Fresh Berries
- Serve with a mix of fresh blueberries, raspberries, and strawberries for a vibrant touch. The tartness complements the sweetness of the cake.
Whipped Cream
- A dollop of freshly whipped cream adds a light and airy texture. It’s perfect for balancing the rich mousse.
Lemon Zest Garnish
- Sprinkle some lemon zest on top before serving for an extra zing. It visually enhances the cake while intensifying the lemon flavor.
Mint Leaves
- Add fresh mint leaves as a garnish. They provide a refreshing contrast and enhance the overall presentation.
Ice Cream
- Pair with a scoop of vanilla or lemon ice cream for an indulgent treat. The creaminess contrasts beautifully with the mousse.
Chocolate Drizzle
- Drizzling melted chocolate over each slice adds an elegant touch. It creates a delightful mix of flavors with the lemon and blueberry.

How to Perfect Lemon Blueberry Shortbread Mousse Cake
To achieve the best results with your Lemon Blueberry Shortbread Mousse Cake, consider these helpful tips.
-
Chill Thoroughly: Make sure to refrigerate the cake for at least four hours. This helps the mousse set properly for a firmer texture.
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Use Fresh Ingredients: Fresh blueberries and lemons will brighten up the flavor profile. Avoid using bottled lemon juice, as fresh juice is always better.
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Beat Cream Properly: When whipping your heavy cream, ensure it reaches stiff peaks. This gives your mousse its light and airy consistency.
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Cool Gelatin Mixture: Allow the gelatin mixture to cool completely before adding it to the cream cheese. This prevents any curdling and maintains a smooth texture.
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Taste Test: Before serving, taste your mousse mixture. Adjust sweetness or tartness if needed by adding more sugar or lemon juice.
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Presentation Matters: Use a sharp knife to slice clean pieces. A beautiful presentation makes every bite more enjoyable!
Best Side Dishes for Lemon Blueberry Shortbread Mousse Cake
Pairing side dishes with your Lemon Blueberry Shortbread Mousse Cake can create a well-rounded meal experience. Here are some excellent options to consider.
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Arugula Salad: A light arugula salad with lemon vinaigrette provides a peppery contrast that balances sweetness.
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Cheese Platter: Include a selection of soft cheeses like brie or goat cheese, which pair perfectly with fruity desserts.
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Grilled Peaches: Caramelized grilled peaches add warmth and depth, creating a delightful combination of flavors.
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Chocolate-Covered Almonds: These crunchy treats offer a rich complement without overwhelming the palate.
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Pistachio Crumble: A sprinkle of pistachio crumble adds crunch and nutty flavor that enhances each bite.
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Lemon Sorbet: A refreshing lemon sorbet serves as a palate cleanser between bites, making it an ideal accompaniment.
-
Coconut Macaroons: Sweet coconut macaroons provide an additional dessert option that pairs nicely with fruit flavors.
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Vanilla Bean Panna Cotta: This creamy dessert contrasts well with the tanginess of the mousse cake, creating a balanced end to your meal.
Common Mistakes to Avoid
Making a Lemon Blueberry Shortbread Mousse Cake can be a delightful experience, but there are common mistakes that can throw off your results.
- Skipping the chilling time: Not allowing the cake to set properly can result in a runny mousse. Be sure to refrigerate it for at least 4 hours.
- Overmixing the cream: Whipping the cream too much can cause it to become grainy. Stop mixing as soon as stiff peaks form for the best texture.
- Not measuring ingredients accurately: Baking is a science, and incorrect measurements can ruin your cake. Use proper measuring cups and spoons for precision.
- Using warm ingredients: A warm environment can affect how well your mousse sets. Ensure all ingredients are at room temperature before starting.
- Neglecting the crust: A soggy shortbread crust is often a problem when it’s not baked long enough. Bake until golden for a firm base.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover cake in an airtight container.
- It will stay fresh in the refrigerator for up to 3 days.
Freezing Lemon Blueberry Shortbread Mousse Cake
- Wrap slices tightly in plastic wrap before placing them in a freezer-safe container.
- The mousse cake will keep well in the freezer for up to 2 months.
Reheating Lemon Blueberry Shortbread Mousse Cake
- Oven: Preheat to 350°F (175°C) and warm slices for about 10 minutes.
- Microwave: Heat individual portions on medium power for 15-20 seconds, checking frequently.
- Stovetop: Place slices in a skillet over low heat, cover, and warm gently.
Frequently Asked Questions
Here are some common questions about making this delicious dessert.
How do I make Lemon Blueberry Shortbread Mousse Cake?
To make this cake, prepare a shortbread crust, whip up lemon mousse, and layer with blueberry compote. Chill before serving.
Can I use frozen blueberries?
Yes, you can use frozen blueberries instead of fresh. Just thaw them and drain any excess liquid before using.
How long does it take to prepare this dessert?
The prep time is about 30 minutes, with an additional cooking time of 20 minutes. Don’t forget chilling time!
What makes this Lemon Blueberry Shortbread Mousse Cake unique?
The combination of zesty lemon and sweet blueberry flavors layered over a buttery shortbread crust creates an irresistible treat.
Final Thoughts
This Lemon Blueberry Shortbread Mousse Cake is not only visually stunning but also offers a delightful balance of flavors that will impress anyone. Feel free to customize by adding different fruits or adjusting sweetness levels. Enjoy making this refreshing dessert!
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📖 Recipe Card
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Lemon Blueberry Shortbread Mousse Cake
- Total Time: 50 minutes
- Yield: Serves approximately 12 people 1x
Description
Indulge in the delightful experience of our Lemon Blueberry Shortbread Mousse Cake, a refreshing dessert that perfectly balances zesty lemon and sweet blueberries atop a buttery shortbread crust. This cake is an elegant addition to any gathering, whether it’s a summer picnic, birthday celebration, or simply a treat for yourself. With its creamy mousse and vibrant blueberry compote, this dessert not only pleases the palate but also impresses with its stunning presentation. Easy to make and sure to become a favorite, each slice promises to leave your guests asking for more.
Ingredients
- 1 1/2 cups all-purpose flour
- 1/2 cup powdered sugar
- 1/2 cup unsalted butter (cold and cubed)
- 1 cup heavy cream
- 1/2 cup granulated sugar
- Zest and juice of 2 lemons
- 8 ounces cream cheese (softened)
- 2 cups fresh blueberries
Instructions
- Preheat your oven to 350°F (175°C). Prepare a 9-inch springform pan.
- In a food processor, combine flour, powdered sugar, butter, and salt until crumbly. Press into the pan and bake for 15-18 minutes until golden. Cool completely.
- For the lemon mousse, warm lemon juice in a saucepan and dissolve gelatin in it. Let cool.
- Whip heavy cream with granulated sugar and lemon zest until stiff peaks form. Beat softened cream cheese until smooth; mix in cooled lemon juice. Fold whipped cream into this mixture gently.
- Pour mousse over cooled crust and refrigerate for at least four hours or until set.
- For blueberry compote (optional), simmer blueberries with sugar and lemon juice until thickened.
- Serve chilled, optionally topped with blueberry compote.
- Prep Time: 30 minutes
- Cook Time: 20 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice (80g)
- Calories: 230
- Sugar: 15g
- Sodium: 120mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 25g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 45mg