Raspberry Mousse Cake

Raspberry Mousse Cake is a medium French recipe that serves 8. 250 calories per serving. Recipe by Once Upon a Time Pastry on YouTube.

Prep: 1 hr 17 min | Cook: 25 min | Total: 1 hr 57 min

Cost: $9.77 total, $1.22 per serving

Ingredients

  • 3 unités Eggs (separate the whites from the yolks)
  • 80 g Granulated sugar (for the yolks)
  • 70 g Almond flour (for the cake, can be replaced with flour (less moist))
  • 30 g Cornstarch (maïzena) (for the cake)
  • 30 g Powdered sugar (for the raspberry purée)
  • 300 g Fresh raspberries (250 g for the mousse, 50 g for decoration)
  • 2 feuilles Sheet gelatin (soaked 5 min in cold water, then drained)
  • 200 ml Whole liquid cream (minimum 30% fat) (whisk until thick consistency)
  • 30 g Butter (to grease the pan)
  • 100 ml Water (for the syrup)
  • 50 g Sugar (for the syrup) (to boil for 2 min)
  • 10 g Powdered sugar (for decoration) (sprinkle on top)

Instructions

  1. Separate the eggs

    Separate the whites from the yolks into two separate bowls. Keep the whites for later.

    Time: PT5M

  2. Whisk the yolks with the sugar

    In the bowl containing the yolks, add the granulated sugar and whisk on medium speed until the mixture doubles in volume and becomes pale.

    Time: PT5M

  3. Incorporate the dry powders

    Add the almond flour then the cornstarch to the yolk‑sugar mixture. Gently fold with the spatula until homogeneous.

    Time: PT2M

  4. Whip the egg whites

    Using the electric whisk, beat the egg whites until firm, glossy peaks form.

    Time: PT8M

  5. Fold the whites into the mixture

    Add the whipped whites to the previous mixture in three additions, folding gently with a spatula so as not to deflate them.

    Time: PT3M

  6. Prepare the pan

    Generously butter the 20 cm springform pan and lightly line it with parchment paper if desired.

    Time: PT2M

  7. Bake the cake

    Pour the batter into the pan, smooth the surface and bake at 180°C for 20 minutes until the cake is golden and slightly springy to the touch.

    Time: PT20M

    Temperature: 180°C

  8. Prepare the syrup (optional)

    Bring 100 ml water with 50 g sugar to a boil for 2 minutes, then let cool.

    Time: PT5M

  9. Cook the raspberries

    In a saucepan, combine 250 g fresh raspberries with 30 g powdered sugar. Heat over medium heat until the sugar fully dissolves, about 5 minutes.

    Time: PT5M

  10. Blend and strain the purée

    Use the immersion blender to obtain a smooth purée, then pass it through a fine sieve to remove any seeds.

    Time: PT3M

  11. Incorporate the gelatin

    Soak the gelatin in cold water for 5 minutes, drain and add it to the hot purée off the heat. Mix well until fully dissolved.

    Time: PT2M

  12. Cool the purée

    Allow the raspberry purée to cool to room temperature, ideally ≤30°C before mixing with the cream.

    Time: PT10M

  13. Whisk the cream

    Pour the very cold whole cream into a bowl and whisk on high speed until a thick, firm consistency is achieved.

    Time: PT5M

  14. Mix the mousse

    Gently fold the cooled raspberry purée into the whipped cream using a spatula, folding until a homogeneous mousse is obtained.

    Time: PT2M

  15. Unmold the cake

    Once the cake is baked, let it cool for a few minutes, then unmold and place on a serving plate.

    Time: PT5M

  16. Pour the mousse over the cake

    Pour the raspberry mousse over the cake, spreading it evenly with a spatula to achieve a smooth surface.

    Time: PT5M

  17. Refrigeration

    Cover the cake with plastic wrap and refrigerate for at least 4 hours (ideally overnight) for the mousse to set.

    Time: PT4H

  18. Final decoration

    Remove the wrap, decorate the top with fresh raspberries and lightly dust with powdered sugar.

    Time: PT5M

Nutrition Facts

Calories
250
Protein
4 g
Carbohydrates
30 g
Fat
12 g
Fiber
2 g

Dietary info: gluten‑free, contains nuts, contains dairy, contains gelatin, low-calorie

Allergens: eggs, almonds, milk, gelatin

Last updated: April 7, 2026

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Raspberry Mousse Cake

Recipe by Once Upon a Time Pastry

A light and fruity cake made of a moist almond base, a silky raspberry mousse, and topped with fresh raspberries. Ideal for summer, this gluten‑free dessert will delight homemade pastry lovers.

MediumFrenchServes 8

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
4h 57m
Prep
35m
Cook
40m
Cleanup
6h 12m
Total

Cost Breakdown

$9.77
Total cost
$1.22
Per serving

Critical Success Points

  • Whisk the egg whites to firm peaks
  • Fold the whites without deflating them
  • Cool the raspberry purée to ≤30 °C before adding the cream
  • Fully dissolve the gelatin off the heat
  • Refrigerate for at least 4 hours for the mousse to set

Safety Warnings

  • Watch out for boiling water splashes when cooking the raspberries.
  • Handle hot gelatin carefully to avoid burns.
  • Do not leave the mousse at room temperature for more than 2 hours to prevent bacterial growth.
  • Use kitchen gloves when handling the hot oven.

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