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Creamy Lemon Blueberry Shortbread Mousse Cake Recipe


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  • Author: Clara
  • Total Time: 4 hours 50 minutes
  • Yield: 8–10 servings

Description

Experience the perfect harmony of flavors with this Creamy Lemon Blueberry Shortbread Mousse Cake! A buttery shortbread crust, light lemon mousse, and a luscious blueberry compote come together to create a show-stopping dessert. Whether for special occasions or a delightful weekend treat, this mousse cake is as beautiful as it is delicious.


Ingredients

For the Shortbread Crust:

  • 1 ½ cups all-purpose flour
  • ½ cup powdered sugar
  • ½ cup (115 g) unsalted butter, cold and cubed
  • A pinch of salt

For the Lemon Mousse:

  • 1 cup heavy cream
  • ½ cup granulated sugar
  • Zest of 2 lemons
  • ½ cup lemon juice
  • 1 tbsp gelatin powder
  • 2 tbsp water
  • 8 oz (225 g) cream cheese, softened

For the Blueberry Compote:

  • 2 cups fresh blueberries
  • ¼ cup granulated sugar
  • 1 tbsp lemon juice

Instructions

  • Prepare the Shortbread Crust:
    • Preheat the oven to 350°F (175°C). Grease a 9-inch springform pan and line the bottom with parchment paper.
    • In a food processor, pulse together flour, powdered sugar, butter, and salt until the mixture resembles coarse crumbs.
    • Press the mixture into the bottom of the prepared pan.
    • Bake for 15–18 minutes or until the edges are lightly golden. Let the crust cool completely.
  • Make the Lemon Mousse:
    • Bloom the gelatin by sprinkling it over 2 tablespoons of water in a small bowl. Let it sit for 5 minutes.
    • Heat the lemon juice in a small saucepan over low heat. Stir in the bloomed gelatin until dissolved, then let it cool to room temperature.
    • In a mixing bowl, whip the heavy cream, granulated sugar, and lemon zest until stiff peaks form.
    • In another bowl, beat the softened cream cheese until smooth. Gradually add the cooled lemon juice mixture, beating until fully incorporated.
    • Fold the whipped cream into the cream cheese mixture until smooth and fluffy.
  • Make the Blueberry Compote:
    • Combine blueberries, sugar, and lemon juice in a medium saucepan. Cook over medium heat, stirring occasionally, until the blueberries soften and release their juices (about 5–7 minutes).
    • Remove from heat and allow the compote to cool to room temperature.
  • Assemble the Cake:
    • Spread a layer of lemon mousse over the cooled shortbread crust.
    • Gently spoon a layer of blueberry compote over the mousse.
    • Continue layering mousse and compote, finishing with a layer of compote on top.
    • Chill the cake in the refrigerator for at least 4 hours or until fully set.
  • Serve:
    • 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 for the best texture and flavor.

Notes

  • For a gluten-free version, substitute the flour with a gluten-free flour blend.
  • Gelatin is essential for setting the mousse; agar-agar can be used as a vegetarian alternative.
  • This cake is best made a day ahead to allow the layers to fully set and the flavors to meld.
  • Prep Time: 30 minutes
  • Cook Time: 20 minutes
  • Category: Dessert
  • Method: Bake and chill
  • Cuisine: Fusion