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Strawberry Mousse Cake

Strawberry Mousse Cake

A sponge cake enrobed in strawberry mousse and topped with strawberry jelly. Add Santa strawberries for Christmas!
Course Dessert
Cuisine Japanese
Keyword cake with strawberry mousse filling, santa strawberries, strawberry mousse cake, strawberry mousse cake filling, strawberry santas
Prep Time 1 hour 30 minutes
Cook Time 35 minutes
1 hour 30 minutes
Total Time 3 hours 35 minutes
Servings 8 servings
Calories 216kcal


Sponge Cake

Strawberry Mousse

Strawberry jelly


Preheat Oven and Prepare Springform Pan

  • Prep: heat oven to 350 degrees F,
  • line the bottom of a 9-in. springform cake pan with parchment paper.
  • Set aside your 8 best looking strawberries for topping the cake.

Sponge Cake Layers

  • Get a medium and a large bowl out. Make sure the medium bowl is *spotless* as you will use it for whipping egg whites.
  • Separate the eggs, putting the whites in the medium bowl and the yolks in the large bowl.
    3 eggs
  • Pour about half of the sugar in with the yolks. Using a hand mixer, beat the egg whites, adding the remaining sugar in increments, until stiff peaks form.
    1/3 cup granulated sugar
  • Beat the egg yolks and sugar until fluffy and pale yellow in color. Add the melted butter, milk, and light corn syrup, and beat to combine.
    1 Tablespoon light corn syrup, 1/2 Tablespoon butter, 1 Tablespoon milk
  • Sift in the cake flour and beat to combine. Do not over-beat, but just until combined.
    1/3 cup cake flour
  • You may need to scrape down the sides and stir with a spatula. Add 1/4-1/3 of the egg whites to the batter, to lighten. Mix until completely combined, and add the remaining egg whites. Gently fold until combined.
  • Pour into prepared springform pan, and bake for about 15 minutes or until lightly golden or until a toothpick comes out clean. Set aside, and when cool to the touch, remove spring form outer shell and wash.
  • Once cake is cooled, cut about 1/2-1 cm width of the outside circumference and remove. We will not be using this, so feel free to snack on it. Now we have a smaller circle of cake, so the cake will be completely hidden by the mousse. 

Strawberry Mousse Filling Layer

  • Sprinkle gelatin over the 50ml of water and stir if it doesn't fully combine on it's own. Let bloom for about 5 minutes.
    4 teaspoon powdered gelatin, 50 ml water
  • Remove stems from strawberries, and place in blender or food processor to puree. Place puree in a medium or large bowl.
    300 g strawberries
  • In a small saucepan, heat the milk and sugar together and stir until barely simmering. Remove from heat and add the gelatin. Stir until melted and fully combined.
    100 ml milk, 45 g granulated sugar
  • Add the gelatin mixture to the strawberry puree and stir together to combine. Stir in lemon juice.
    1.5 Tablespoon lemon juice
  • In a separate bowl, whip the cream until very soft peaks form (80% whipped). Pour the whipped cream into the strawberry mixture and fold in until combined.
    150 ml heavy whipping cream
  • Place outer springform back onto the base with the cake on it, and pour the mousse over the cake. Smooth the top, and place in fridge for 30 minutes to set.

Strawberry Jelly Layer

  • When mousse has set in the fridge, sprinkle gelatin over the 1 T water and allow to bloom.
    1 Tablespoon water, 1 teaspoon powdered gelatin
  • Meanwhile, puree the strawberries, and add to a small saucepan with the sugar.
    150 g strawberries, 15 g granulated sugar
  • Stir and heat over medium heat until barely simmering. Remove from heat and stir in the gelatin.
  • Pour through a sieve to remove the seeds. Once the mixture is no longer hot, pour over the mousse and return to the fridge to firm up.


  • Remove the cake from the fridge and run a thin, sharp-bladed knife around the cakes edge. Remove springform side.
  • Decorate your cake with the whipped cream and strawberries. Add mint for garnish. 
    sweetened whipped cream, mint leaves for garnish

Strawberry Santas

  • If you would like to make Santa Strawberries, take the 8 topping strawberries, and cut the top 1/3 off.
    8 nicely shaped strawberries
  • This will be your hat. Pipe whipped cream onto the bottom half, and gently place hat on top.
  • Use black sesame seeds, flax seeds, mini chocolate chips, etc. to make eyes.
  • Pipe a small dot of cream on the tops of the hats, and buttons on the front. 


Mousse recipe adapted from: Cookpad (Japanese). 


Calories: 216kcal | Carbohydrates: 29g | Protein: 6g | Fat: 9g | Saturated Fat: 5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 1g | Cholesterol: 89mg | Sodium: 46mg | Potassium: 170mg | Fiber: 1g | Sugar: 22g | Vitamin A: 398IU | Vitamin C: 41mg | Calcium: 53mg | Iron: 1mg