Lemon Blueberry Shortbread Mousse Cake
This Lemon Blueberry Shortbread Mousse Cake is a showstopper dessert that perfectly balances zesty and sweet flavors. Ideal for gatherings, picnics, or simply as a delightful treat for yourself, this cake features a creamy lemon mousse layered with fresh blueberries and a buttery shortbread crust. Each bite offers a refreshing taste that will keep you coming back for more!
Why You’ll Love This Recipe
- Delicious Flavor Combination: The tangy lemon mousse paired with sweet blueberry compote creates a unique taste experience.
- Easy to Make: With simple ingredients and straightforward steps, this recipe is accessible even for beginner bakers.
- Perfect for Any Occasion: Whether it’s a summer barbecue or a holiday gathering, this dessert fits right in.
- Refreshing Texture: The light mousse and crumbly shortbread provide a delightful contrast in every bite.
- Impressive Presentation: The beautiful layers of lemon and blueberry make this cake visually stunning.
Tools and Preparation
Before you start making your Lemon Blueberry Shortbread Mousse Cake, gather the necessary tools to simplify your baking process.
Essential Tools and Equipment
- Food processor
- Mixing bowls
- Whisk
- Baking pan
- Saucepan
- Measuring cups and spoons
Importance of Each Tool
- Food processor: Quickly mixes the shortbread crust ingredients to achieve the perfect crumbly texture.
- Mixing bowls: Essential for separating different components like the mousse and the crust while allowing easy mixing.
- Baking pan: Ensures even baking of the shortbread base for a sturdy foundation.
- Whisk: Helps achieve stiff peaks when whipping cream, essential for lightening the mousse.
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
- 8 ounces cream cheese, softened
For the Blueberry Compote:
- 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.
- Bake for 15-18 minutes, or until lightly golden. Allow it to cool completely.
Step 2: Make the Lemon Mousse
- Heat lemon juice over low heat in a saucepan until warm.
- Stir in the bloomed gelatin (from mixing with water) until dissolved. Let this mixture cool to room temperature.
- In a mixing bowl, beat together heavy cream, granulated sugar, and lemon zest until stiff peaks form.
- In another bowl, whip the cream cheese until smooth. Gradually add the cooled lemon juice mixture while continuing to beat until combined.
- Fold in the whipped cream gently until fully incorporated.
Step 3: Assemble and Chill
- Pour the lemon mousse over the cooled shortbread crust in the pan.
- Refrigerate for at least 4 hours or until set.
Step 4: Prepare Blueberry Compote
- In a small saucepan, combine fresh blueberries with granulated sugar and lemon juice. Cook over medium heat until blueberries burst and release their juices, about 5-7 minutes.
Step 5: Final Touches
- Before serving, run a knife around the edge of the pan to loosen the cake.
- Carefully remove sides of the pan, slice into servings, and top with blueberry compote before serving chilled.
Enjoy your delicious homemade Lemon Blueberry Shortbread Mousse Cake!
How to Serve Lemon Blueberry Shortbread Mousse Cake
This delightful Lemon Blueberry Shortbread Mousse Cake is an elegant dessert that can be served in various ways. Whether for a casual family gathering or a formal dinner party, these serving suggestions will enhance the experience.
Individual Slices
- Serve each slice on a small dessert plate, garnished with a dollop of whipped cream and a few fresh blueberries for added color and flavor.
With Fresh Mint
- Add a sprig of fresh mint on top of each slice to bring a refreshing aroma that pairs beautifully with the lemon and blueberry flavors.
Accompanied by Ice Cream
- Pair the mousse cake with a scoop of vanilla or lemon sorbet. The creamy texture and temperature contrast create a delightful eating experience.
Drizzled with Honey
- A light drizzle of honey over the top adds extra sweetness and makes the presentation even more appealing.
Served as Mini Cakes
- For a fun twist, cut the cake into smaller portions and serve them as mini cakes. This is perfect for parties or picnics.

How to Perfect Lemon Blueberry Shortbread Mousse Cake
Creating the perfect Lemon Blueberry Shortbread Mousse Cake requires attention to detail. Follow these tips for an outstanding dessert.
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Use cold butter: Ensure your unsalted butter is cold when making the shortbread crust. This helps achieve a flaky texture.
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Bloom gelatin properly: Always bloom gelatin in water before adding it to warm mixtures to ensure it dissolves completely without clumps.
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Whip cream to stiff peaks: When beating heavy cream, make sure it reaches stiff peaks. This will give your mousse the right lightness and structure.
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Allow ample chilling time: Let your cake chill for at least 4 hours before serving. This ensures it sets properly and enhances the flavors.
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Serve chilled: For the best taste, serve your mousse cake straight from the fridge. The coolness accentuates its refreshing qualities.
Best Side Dishes for Lemon Blueberry Shortbread Mousse Cake
Completing your meal with complementary side dishes can elevate the overall dining experience. Here are some great options to pair with your Lemon Blueberry Shortbread Mousse Cake.
- Lemon Sorbet – A light and zesty addition that refreshes the palate between bites of rich cake.
- Mixed Green Salad – Tossed greens with vinaigrette provide a crisp contrast to the cake’s sweetness.
- Fresh Fruit Salad – A medley of seasonal fruits adds freshness and balances out dessert indulgence.
- Vanilla Ice Cream – Classic ice cream complements the flavors while adding creaminess to each bite.
- Coconut Whipped Cream – A dairy-free option that provides unique flavor notes alongside your dessert.
- Cheese Platter – Pairing cheese, especially soft varieties like brie, can add complexity to your dessert course.
- Chocolate Covered Strawberries – A sweet treat that harmonizes beautifully with lemon and blueberry flavors.
- Pineapple Salsa – The tangy-sweet salsa brings an unexpected twist that can enhance every bite of cake.
Common Mistakes to Avoid
When making Lemon Blueberry Shortbread Mousse Cake, it’s easy to make a few common mistakes. Here’s how to avoid them:
- Overmixing the Shortbread Dough: Mixing too much can lead to tough crust. Instead, mix until just combined and crumbly.
- Not Chilling the Mousse Enough: If the mousse isn’t chilled for at least 4 hours, it won’t set properly. Always allow adequate time for chilling.
- Using Warm Gelatin Mixture: Adding warm gelatin directly into the mousse can cause it to collapse. Ensure it cools to room temperature before mixing.
- Skipping Fresh Ingredients: Using stale or frozen blueberries can affect flavor. Opt for fresh blueberries for a burst of flavor.
- Not Measuring Ingredients Accurately: Imprecise measurements can ruin your mousse cake. Use kitchen scales or measuring cups for accuracy.

Storage & Reheating Instructions
Refrigerator Storage
- item Store the Lemon Blueberry Shortbread Mousse Cake in an airtight container.
- item It will last up to 3 days in the refrigerator without losing flavor.
Freezing Lemon Blueberry Shortbread Mousse Cake
- item Wrap individual slices in plastic wrap and then place them in a freezer-safe container.
- item This dessert can be frozen for up to 2 months.
Reheating Lemon Blueberry Shortbread Mousse Cake
- Oven: Preheat to 350°F (175°C). Warm slices for about 10 minutes.
- Microwave: Heat on medium power for about 15-20 seconds until slightly warm.
- Stovetop: Use a non-stick skillet on low heat, cover, and warm for about 5 minutes.
Frequently Asked Questions
Here are some common questions regarding Lemon Blueberry Shortbread Mousse Cake:
Can I use frozen blueberries in this recipe?
Yes, you can use frozen blueberries but fresh ones provide a better texture and flavor.
How do I make my mousse fluffier?
To achieve a fluffier mousse, ensure you whip the cream until stiff peaks form before folding it into the mixture.
What is the best way to serve Lemon Blueberry Shortbread Mousse Cake?
This cake is best served chilled, garnished with additional blueberries or lemon zest for added freshness and presentation.
How long does it take to prepare this dessert?
The total time is about 50 minutes, including prep and baking time, but remember to refrigerate it for at least 4 hours before serving.
Can I customize the flavors of this cake?
Absolutely! You can experiment with different fruits or add herbs like mint for a unique twist on this delightful dessert.
Final Thoughts
The Lemon Blueberry Shortbread Mousse Cake is not just a dessert; it’s a refreshing treat perfect for any occasion. Its combination of zesty lemon and sweet blueberries makes it versatile enough to customize as per your taste preferences. Whether hosting a gathering or enjoying a quiet evening at home, this cake promises satisfaction. Give it a try and explore various ways to make it your own!

Lemon Blueberry Shortbread Mousse Cake
- Prep Time: 20 minutes
- Cook Time: 18 minutes
- Total Time: 38 minutes
- Yield: Approximately 12 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
Indulge in the refreshing delight of Lemon Blueberry Shortbread Mousse Cake, a perfect dessert that harmoniously blends zesty lemon flavors with sweet, juicy blueberries. This elegant cake features a buttery shortbread crust topped with a light and creamy lemon mousse, bringing a delightful contrast of textures and tastes in every bite. Ideal for summer gatherings, picnics, or as a special treat for yourself, this dessert is not only visually stunning but also simple to prepare. With straightforward instructions and common ingredients, you can impress your friends and family with this showstopper that will have everyone coming back 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 of 2 lemons
- 1/2 cup fresh lemon juice
- 8 ounces cream cheese, softened
- 2 cups fresh blueberries
Instructions
- Preheat your oven to 350°F (175°C). In a food processor, combine flour, powdered sugar, butter, and salt until crumbly. Press into a baking pan and bake for 15-18 minutes until golden. Cool.
- In a saucepan over low heat, warm lemon juice and dissolve bloomed gelatin mixed with water. Let cool. Whip heavy cream with sugar and lemon zest to stiff peaks in a bowl.
- Beat cream cheese until smooth, then add cooled lemon mixture. Fold in whipped cream gently.
- Pour mousse over the cooled crust and refrigerate for at least 4 hours to set.
- For blueberry compote, cook blueberries with sugar and lemon juice until they burst. Serve on top of the cake.
Nutrition
- Serving Size: 1 slice (90g)
- Calories: 290
- Sugar: 20g
- Sodium: 170mg
- Fat: 18g
- Saturated Fat: 10g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 55mg