Blueberry Lemon Mousse Cake is a refreshing layered dessert that combines a soft cake base with a silky lemon mousse and a vibrant blueberry topping. Each bite offers a balance of tangy citrus, sweet berries, and airy creaminess that melts smoothly on the palate. This elegant cake looks impressive but comes together with simple steps, making it perfect for celebrations, summer gatherings, or a light dessert after a meal.
Why You’ll Love This Recipe
- Light and airy mousse with fresh citrus flavor
- Sweet blueberry layer adds color and balance
- Beautiful layered presentation
- Perfect for spring and summer desserts
- Make-ahead friendly for gatherings
- Refreshing alternative to heavy cakes
Ingredients

Cake Base
- 1 cup all-purpose flour
- ½ cup granulated sugar
- 1 tsp baking powder
- ¼ tsp salt
- 2 eggs
- ¼ cup milk
- ¼ cup vegetable oil
- 1 tsp vanilla extract
Lemon Mousse
- 1 cup heavy cream
- ½ cup powdered sugar
- 2 tbsp lemon juice
- 1 tbsp lemon zest
- 1 tsp gelatin (optional for stability)
- 2 tbsp water (for gelatin)
Blueberry Topping
- 2 cups blueberries
- ¼ cup sugar
- 1 tbsp lemon juice
- 1 tsp cornstarch
- 2 tbsp water
Step-by-Step Instructions

- Preheat oven to 350°F (175°C) and prepare cake pan
- Mix flour, sugar, baking powder, and salt
- Add eggs, milk, oil, and vanilla and mix until smooth
- Pour batter into pan and bake for 20–25 minutes
- Let cake cool completely
- Cook blueberries with sugar and lemon juice until soft
- Mix cornstarch with water and add to blueberry mixture
- Cook until thickened and let cool
- Whip heavy cream with powdered sugar until soft peaks
- Warm gelatin with water until dissolved (optional)
- Mix lemon juice and zest into whipped cream
- Fold in gelatin for stability if using
- Spread mousse evenly over cooled cake
- Add blueberry topping layer
- Chill cake for at least 4 hours until set
- Slice and serve chilled
Tips & Variations
- Use fresh blueberries for best flavor
- Skip gelatin for a softer mousse texture
- Add a biscuit base instead of cake for variation
- Chill overnight for best structure
- Use lime instead of lemon for a twist
- Add white chocolate shavings for decoration
- Keep layers even for clean slices
Storage & Freezer Instructions
- Store in refrigerator in airtight container
- Keep for up to 4 days
- Keep chilled until serving
- Do not leave at room temperature too long
- Freeze slices for up to 1 month
- Thaw in refrigerator before serving
Serving & Pairing Ideas

- Serve chilled for best texture
- Garnish with fresh blueberries
- Add lemon zest on top
- Pair with iced tea or lemonade
- Serve as celebration cake
- Add whipped cream on side
- Pair with light fruit salads
Frequently Asked Questions
Can I make this cake without gelatin?
Yes, gelatin is optional. The mousse will still set but will be softer and less firm.
Can I use frozen blueberries?
Yes, frozen blueberries work well. Cook them slightly longer to remove excess moisture.
How do I get clean cake slices?
Use a sharp knife and wipe it clean between cuts for neat layers.
Can I make this ahead of time?
Yes, this cake is ideal for making a day ahead since it needs time to chill and set.
Ready to Make It?
Blueberry Lemon Mousse Cake is a light, refreshing dessert that combines creamy mousse with bright citrus and sweet berries. It’s elegant, easy to prepare, and perfect for any occasion where you want something fresh and beautiful.
You Might Also Like
- Strawberry Lemon Loaf – soft citrus loaf with fresh strawberries.
- Mango Sorbet – refreshing tropical frozen dessert.
- Berry Galette – rustic tart with juicy berries and flaky crust.
- Cherry Clafoutis – classic French baked fruit dessert.
Blueberry Lemon Mousse Cake
- Total Time: 5 hours
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
Blueberry Lemon Mousse Cake – a light layered dessert with citrus mousse and sweet blueberry topping.
Ingredients
1 cup flour
½ cup sugar
1 tsp baking powder
¼ tsp salt
2 eggs
¼ cup milk
¼ cup oil
1 tsp vanilla
1 cup heavy cream
½ cup powdered sugar
2 tbsp lemon juice
1 tbsp lemon zest
1 tsp gelatin optional
2 tbsp water
2 cups blueberries
¼ cup sugar
1 tbsp lemon juice
1 tsp cornstarch
2 tbsp water
Instructions
1. Prepare and bake cake base
2. Cool completely
3. Cook blueberry topping and cool
4. Whip cream with sugar
5. Add lemon flavor and gelatin if using
6. Spread mousse over cake
7. Add blueberry layer
8. Chill for 4 hours
9. Slice and serve
Notes
Chill well for best texture
Use fresh fruit if possible
Slice with clean knife
Store chilled
- Prep Time: 25 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking & Chilling
- Cuisine: International
Nutrition
- Serving Size: 1 slice