3-Ingredient No-Bake Lemon Cookie Mousse
Desserts

3-Ingredient No-Bake Lemon Cookie Mousse

ML
By Marie Lefebvre · Updated October 16, 2026

This is the last-minute dessert that saves every dinner: three ingredients, no baking, and an incredibly fresh lemon mousse. The cookies soften between the layers of cream until it tastes like a real cake. Nobody will guess how easy it was.

Prep⏱️ 20 min
Servings👥 6 servings
Difficulty📊 Very Easy
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🛒 Ingredients

6 servings

6
  • 2 cans sweetened condensed milk (about 800 g / 28 oz)
  • 100 ml fresh lemon juice (about 3 lemons)
  • 3 packs cookie-style biscuits (about 400 g)
  • Finely grated zest of 1 unwaxed lemon
  • A few fresh mint leaves, to decorate

Directions

  1. 1

    Pour the sweetened condensed milk into a large bowl and add the fresh lemon juice.

  2. 2

    Whisk vigorously for a minute: the mixture thickens into a smooth, creamy mousse. Chill while you prepare the biscuits.

  3. 3

    Roughly crush two packs of cookies (keep the third aside for the topping).

  4. 4

    Spread a layer of lemon cream over the base of a rectangular dish, then add a layer of cookies.

  5. 5

    Repeat the alternating layers, finishing with a layer of cream.

  6. 6

    Scatter the remaining crushed cookies on top and refrigerate for at least 3 hours until firm and cold.

💡 Chef's Tip

For a tangier dessert, whisk the lemon zest into the cream. Let it set overnight and the cookies soften into a cake-like base. Run a warm knife along the edges before slicing for clean portions.