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No Bake Chocolate Mousse Tart Recipe

This No Bake Chocolate Mousse Tart is rich, creamy, and indulgently smooth. With a crunchy cookie crust and a light, airy chocolate filling, it's the perfect make-ahead dessert for any chocolate lover.
Print Recipe
Prep Time 25 minutes
Chilling Time 4 hours
Total Time 4 hours 25 minutes
Servings 8 slices

Ingredients
  

For the crust:

  • 1 1/2 cups chocolate cookie crumbs like Oreos, crushed
  • 5 tbsp unsalted butter melted

For the mousse filling:

  • 8 oz high-quality dark chocolate chopped
  • 1 1/4 cups heavy cream divided
  • 1 tsp vanilla extract
  • Pinch of salt

Optional toppings:

  • Fresh berries raspberries or strawberries
  • Chocolate curls or shavings
  • Whipped cream
  • Sea salt flakes

Instructions
 

  • In a bowl, combine crushed cookies and melted butter. Press into the bottom and sides of a 9-inch tart pan. Chill in the freezer for 15 minutes.
  • In a heatproof bowl, melt the chopped chocolate with 1/4 cup of cream over a double boiler or in the microwave in 20-second bursts. Stir until smooth. Let cool slightly.
  • In a separate bowl, whip the remaining 1 cup of heavy cream with vanilla and salt until soft peaks form.
  • Gently fold whipped cream into the cooled chocolate mixture until fully combined and fluffy.
  • Spoon the mousse into the chilled crust and smooth the top with a spatula.
  • Refrigerate for at least 4 hours, or until set.
  • Before serving, top with fresh berries, chocolate curls, or a dollop of whipped cream.

Notes

  • Use high-quality dark chocolate (60–70% cocoa) for best results.
  • Chill the bowl and beaters before whipping the cream for quicker results.
  • For added flavor, add a splash of espresso or liqueur to the chocolate.
  • The tart keeps well in the fridge for up to 3 days.
  • Use a tart pan with a removable bottom for easy slicing.