Lemon Blueberry Mousse Cake
Lemon Blueberry Mousse Cake is a creamy, zesty dessert that tastes like summer. I’ve made this many times and it never disappoints. The trick I discovered is using fresh blueberries for the best flavor. Crispy shortbread crust with a silky mousse and juicy blueberries makes this irresistible. Try it with my Garlic Parmesan Baked Potato Wedges for a sweet and savory meal. Jump to Recipe. If you love recipes like this, you’ll also enjoy Garlic Parmesan Baked Potato Wedges and Easy Oven-Roasted Mushrooms with Honey Soy Sauce.
Why This Lemon Blueberry Mousse Cake Is Pure Comfort
- light and refreshing
- sweet and tangy
- perfect for gatherings
- easy to make
What You'll Need for Lemon Blueberry Mousse Cake
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- 1 1/2 cups all-purpose flour
- 1/2 cup unsalted butter, cold
- 1/4 cup granulated sugar
- 1/2 cup fresh blueberries
- 1/2 cup heavy cream
- 2 tablespoons lemon zest
- 1 tablespoon lemon juice
- 1/4 teaspoon salt
- 1/2 teaspoon vanilla extract
- Optional: powdered sugar
- Optional: extra blueberries
- Optional: lemon glaze
📝 Ingredient Notes
- all-purpose flour: Use unbleached flour for better texture.
- unsalted butter: Cold butter helps create a flaky crust.
- fresh blueberries: Frozen blueberries can be used but will make the mousse softer.
- heavy cream: Whipping cream with at least 35% fat works best.
🛒 Tools & Equipment I Recommend
- Silicone Mixing Bowl — Durable and easy to clean → See on Amazon
- Custard Thermometer — Ensures perfect temperature for mousse → See on Amazon
How to Make Lemon Blueberry Mousse Cake
- Prep Crust: In a food processor, blend flour, butter, and sugar until crumbly. Press into a pie dish and bake at 350°F (175°C) for 10–12 minutes until golden.
- Make Mousse: In a bowl, beat cream until stiff. In another bowl, mix lemon zest, juice, and vanilla. Fold into the whipped cream until smooth.
- Layer Mousse: Pour mousse over cooled crust. Chill in the fridge for at least 4 hours or overnight.
- Add Toppings: Before serving, top with fresh blueberries and a light lemon glaze.
Cook's Tips for Perfect Lemon Blueberry Mousse Cake
- Prep tip: Use room-temperature butter for the crust to avoid a greasy texture.
- Common mistake and fix: If the mousse is too runny, chill it longer or add more whipped cream for structure.
- Storage: Store in an airtight container in the fridge for up to 3 days.
- Serving: Let the cake come to room temperature before serving for the best flavor.
Storing & Reheating Lemon Blueberry Mousse Cake
Short-Term Storage
Store in an airtight container in the fridge. 3 days Make-ahead tip: Make crust and mousse up to 2 days in advance.
Freezing Lemon Blueberry Mousse Cake
1 month
How to Reheat Without Drying It Out
Oven: 10 minutes at 350°F (175°C) Microwave: 30 seconds on high
Recipe Notes
- Chef tip: Use fresh lemon juice for the best zesty flavor.
- Best substitution: Replace blueberries with raspberries for a different twist.
- Make-ahead: The mousse can be made and chilled 2 days ahead.
- Scaling: Double the recipe for a larger gathering.
- Troubleshooting: If the crust is too dense, mix it more gently.
Want to level up this recipe?
Stand Mixer — Saves time when making mousse and crust → Check price on Amazon
Lemon Blueberry Mousse Cake
Ingredients
Main Ingredients
- 1 1/2 cups all-purpose flour
- 1/2 cup unsalted butter, cold
- 1/4 cup granulated sugar
- 1/2 cup fresh blueberries
- 1/2 cup heavy cream
Seasonings
- 2 tablespoons lemon zest
- 1 tablespoon lemon juice
- 1/4 teaspoon salt
- 1/2 teaspoon vanilla extract
Optional Toppings
- powdered sugar
- extra blueberries
- lemon glaze
Instructions
- Prep Crust: In a food processor, blend flour, butter, and sugar until crumbly. Press into a pie dish and bake at 350°F (175°C) for 10–12 minutes until golden.
- Make Mousse: In a bowl, beat cream until stiff. In another bowl, mix lemon zest, juice, and vanilla. Fold into the whipped cream until smooth.
- Layer Mousse: Pour mousse over cooled crust. Chill in the fridge for at least 4 hours or overnight.
- Add Toppings: Before serving, top with fresh blueberries and a light lemon glaze.
Notes
- Chef tip: Use fresh lemon juice for the best zesty flavor.
- Best substitution: Replace blueberries with raspberries for a different twist.
- Make-ahead: The mousse can be made and chilled 2 days ahead.
- Scaling: Double the recipe for a larger gathering.
- Troubleshooting: If the crust is too dense, mix it more gently.
Storage
- Fridge: 3 days
- Freezer: 1 month
- Oven reheat: 10 minutes at 350°F (175°C)
- Microwave reheat: 30 seconds on high
- Make ahead: Make crust and mousse up to 2 days in advance.
Nutrition Per Serving
- Calories: 350
- Protein: 4g
- Fat: 18g
- Carbs: 30g
- Fiber: 1g
- Sugar: 18g
- Sodium: 120mg
- Cholesterol: 60mg
- Sat. Fat: 10g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Lemon Blueberry Mousse Cake FAQs
Yes, the mousse can be prepared up to 2 days in advance and chilled. The crust can be made a day before and stored at room temperature.
If the mousse is too runny, it may not have been chilled long enough. Add more whipped cream and mix well before chilling again.
Yes, wrap tightly and freeze for up to 1 month. Thaw in the fridge overnight before serving.
Raspberries, cherries, or strawberries work well as substitutes. They add a similar tart flavor.
Chill the mousse longer or add more whipped cream. Make sure the cream is whipped to stiff peaks before folding in.
A Warm Final Note
I can’t wait for you to try Lemon Blueberry Mousse Cake and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!
