Chocolate mousse tart

Last Updated: 2026 May 27
chocolate mousse tart

Recipe for a delicious no-bake chocolate tart

Today’s recipe – chocolate mousse tart. This no-bake chocolate cake, prepared on an Oreo cookie crust, has a delicious chocolate mousse filling that no one can resist. The cake is simple to prepare, and the final result is delightful. You must try it!

chocolate cake on an Oreo cookie crust

Chocolate mousse tart recipe step by step

If you love intensely chocolatey cakes, and you also love no-bake cakes, then you absolutely must try this recipe!

chocolate mousse tart

Chocolate mousse tart recipe

Wypieki Beaty
Recipe for a rich chocolate no-bake cake – with Oreo cookies and whipped cream.
5 z 4 ocen
Prep Time 40 minutes
2 hours
Total Time 2 hours 40 minutes
Course Cakes
Kuchnia American cuisine
Servings 12
Calories 330 kcal
Wyposażenie
  • Springform pan with a diameter of about 22 cm.
Składniki

ingredients for the Oreo cookie crust

  • 20 pieces Oreo cookies (about 230 g)
  • 60 g butter (melted)

ingredients for the chocolate mousse for the cake

  • 200 g milk chocolate
  • 200 g dark chocolate
  • 500 ml heavy cream (well chilled)
  • 1 tablespoon gelatin (+ a little cold water to dissolve it)

ingredients for the whipped cream for the cake

  • 250 ml heavy cream (well chilled)
  • 2-3 tablespoons powdered sugar (or to taste)
Instrukcja
 

How to make a no-bake chocolate mousse cake

  • Crush the Oreo cookies into fine crumbs – I process them in a food processor – and add the melted butter – mix.
    20 pieces Oreo cookies, 60 g butter
    przygotowanie spodu z ciasteczek i masła
  • Line the bottom of the mold with baking paper, lightly grease the sides with butter.
  • Add the crushed cookies.
  • Press the cookies onto the sides of the mold – to a height of about 3 cm, and use the rest to line the bottom.
    wyklejanie foremki rozkruszonymi ciastkami
  • Place the mold in the refrigerator.
  • Break the chocolates into smaller pieces and melt them – I melted them in separate bowls. I heated each in the microwave for about 2 minutes (in 30-second intervals). Mix the chocolates thoroughly and set aside to cool slightly.
    200 g milk chocolate, 200 g dark chocolate
    jak rozpuścić czekoladę
  • Cover the gelatin with a little water – just enough to cover it – and set aside to swell.
    1 tablespoon gelatin
    jak przygotować żelatynę
  • Whip the cold heavy cream until it is thick.
    500 ml heavy cream
  • Add a spoonful of whipped cream to the chocolates and mix them.
    przygotowanie musu czekoladowego
  • Transfer the chocolates to a bowl with the whipped cream and mix thoroughly.
    jak przygotować mus czekoladowy
  • Briefly heat the gelatin, and when it becomes liquid, add a spoonful of chocolate mousse to it and mix.
    jak przygotować żelatynę przed dodaniem jej do deseru
  • Pour the gelatin into the rest of the mousse and mix thoroughly.
  • Transfer the mousse to the mold with the chilled Oreo cookie crust.
    tarta z musem czekoladowym przygotowana do schłodzenia w lodówce
  • Place the tart in the refrigerator to chill.
  • Whip the cold heavy cream with powdered sugar until it is thick.
    250 ml heavy cream, 2-3 tablespoons powdered sugar
  • Spread the whipped cream on top of the cake.
  • You can additionally sprinkle the top with chopped cookies or grated chocolate.
    tarta czekoladowa z bitą śmietaną
Wartości Odżywcze
Serving: 100gCalories: 330kcalWeglowodany: 24gProtein: 3gTłuszcz: 24g
Keyword chocolate tart with oreo, no-bake chocolate cake
Tried this recipe?Daj znać w komentarzu!
no-bake chocolate tart on an Oreo crust

No-bake chocolate mousse cake – notes

I invite you to try this super chocolatey cake made on an Oreo cookie crust and decorated with whipped cream.

This is a no-bake chocolate cake, so it’s perfect for summer when you don’t feel like turning on the oven.

The chocolate tart looks and tastes amazing, and it’s very simple to make – see for yourselves :)

no-bake chocolate cake with whipped cream and Oreo cookies

How to make a no-bake chocolate cake – tips

You will need a lot of chocolate here – as many as four bars. I used two bars of milk chocolate and two bars of dark chocolate. The milk chocolate added sweetness to the cake, so I didn’t use any additional sugar :)

Besides chocolate, you will need whipping cream – I used 30% liquid cream in a carton, gelatin (powdered for me), and cookies for the crumb crust.

I used Oreo cookies, but you can also use their Lidl substitutes, or regular digestive biscuits – just make sure to choose chocolate ones.

Preparing the chocolate tart itself is neither difficult nor time-consuming. Most of the time will be spent chilling the cake in the refrigerator.

Remember to thoroughly chill the whipping cream before whisking – otherwise, it won’t whip up.

You also need to be careful with gelatin – it must not be overheated, as it may then lose its gelling properties.

I always cover the gelatin with a small amount of cold water and set it aside to swell for a few minutes.

Then I heat it in the microwave (for a maximum of 10 seconds) until it becomes slightly liquid.

no-bake chocolate tart served with whipped cream

How to avoid gelatin “lumps” in chocolate mousse?

Before adding gelatin to the cold mousse, you need to temper it. This way, there won’t be such strong temperature differences, and the gelatin won’t set too quickly.

Simply add a heaped tablespoon of chocolate mousse to the heated gelatin and mix thoroughly. Only then add the tempered gelatin to the mousse and mix thoroughly.

The no-bake chocolate tart thickens and slightly hardens while chilling.

Therefore, it’s worth taking it out a little earlier before serving. The cake will warm up, and the chocolate mousse will become fluffier.

It’s best to cut the cake with a warm knife, then it will be easier to cut nice slices.

P.S.

If you like chocolate baked goods, check out my other chocolate cake recipes, I also recommend my no-bake cake recipes.

I also highly recommend my e-book “Beata’s Chocolate Baked Goods” where you will find many delicious recipes for chocolate baked goods.

I recommend following my instagram for delicious and easy recipes!

no-bake chocolate mousse cake
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5 z 4 ocen
Postaw mi kawę
no-bake chocolate tart

Recommended mousse cake recipes

Be sure to try my other recipes for delicious and beautiful mousse cakes. Here I recommend, among others, these three recipes:

Published On: 2022 September 2

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