Lemon Blueberry Shortbread Mousse Cake

A Lemon Blueberry Shortbread Mousse Cake is a refreshing and elegant dessert with layers of buttery shortbread, zesty lemon mousse, and fresh blueberries. Here’s a detailed recipe to create this stunning treat:

Lemon Blueberry Shortbread Mousse Cake Recipe

Ingredients:

For the shortbread crust:

  • 1 ½ cups all-purpose flour
  • ½ cup powdered sugar
  • ¾ cup unsalted butter, softened
  • 1 tsp vanilla extract
  • Pinch of salt

For the lemon mousse:

  • 1 cup lemon juice (freshly squeezed)
  • 1 tbsp lemon zest
  • ¾ cup granulated sugar
  • 3 egg yolks
  • 2 tsp cornstarch
  • 1 ½ cups heavy cream
  • 1 tsp gelatin powder
  • 2 tbsp cold water

For the blueberry compote:

  • 1 ½ cups fresh or frozen blueberries
  • ¼ cup sugar
  • 1 tbsp lemon juice
  • 1 tbsp cornstarch (mixed with 1 tbsp water)

For garnish:

  • Fresh blueberries
  • Lemon zest curls
  • Whipped cream (optional)

Instructions:

1. Make the shortbread crust:

  • Preheat your oven to 350°F (175°C).
  • In a large bowl, mix the flour, powdered sugar, and salt.
  • Add the softened butter and vanilla extract, and mix until the dough comes together and forms a soft, crumbly consistency.
  • Press the dough evenly into the bottom of a 9-inch springform pan or tart pan.
  • Bake the shortbread for 18-20 minutes, or until lightly golden. Let it cool completely.

2. Prepare the lemon mousse:

  • In a small saucepan, whisk together the lemon juice, lemon zest, sugar, egg yolks, and cornstarch.
  • Cook over medium heat, whisking constantly, until the mixture thickens (about 5-7 minutes).
  • Remove from heat, strain to remove any lumps, and allow the lemon curd to cool.
  • In a small bowl, dissolve the gelatin powder in cold water and let it sit for 5 minutes.
  • Microwave the gelatin for 10 seconds to dissolve it, then mix it into the cooled lemon curd.
  • In a separate bowl, whip the heavy cream until stiff peaks form.
  • Gently fold the whipped cream into the lemon curd mixture, being careful not to deflate the cream. Set the mousse aside.

3. Prepare the blueberry compote:

  • In a medium saucepan, combine the blueberries, sugar, and lemon juice.
  • Cook over medium heat until the blueberries begin to release their juices and break down (about 5 minutes).
  • Stir in the cornstarch mixture and cook for another 2-3 minutes until thickened.
  • Remove from heat and let cool.

4. Assemble the cake:

  • Spread a thin layer of the lemon mousse over the cooled shortbread crust.
  • Spoon half of the blueberry compote over the mousse layer, then spread the remaining mousse on top.
  • Cover and refrigerate the cake for at least 4 hours, or overnight, to allow the mousse to set.

5. Garnish and serve:

  • Before serving, top the cake with the remaining blueberry compote and garnish with fresh blueberries, lemon zest curls, and a dollop of whipped cream if desired.

This Lemon Blueberry Shortbread Mousse Cake is perfect for summer or special occasions, combining buttery shortbread, tangy lemon, and sweet blueberries into a light, refreshing dessert!

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