Chocolate Mousse Cake is a rich, creamy, and indulgent dessert made with a crunchy Oreo crust and a smooth chocolate mousse filling. This elegant no-bake cake is perfect for celebrations, dinner parties, or whenever you crave a luxurious chocolate treat.
Why You’ll Love This Recipe
This Chocolate Mousse Cake is silky, airy, and full of deep chocolate flavor. The contrast between the crunchy Oreo base and the light mousse creates the perfect texture. It’s easy to prepare ahead of time and delivers bakery-quality results with minimal effort.
Ingredients

For the Oreo Crust
- 25 Oreo cookies, finely crushed
- 5 tablespoons unsalted butter, melted
For the Chocolate Mousse Filling
- 8 ounces semisweet chocolate, chopped
- 1 teaspoon vanilla extract
- 1 pinch salt
- 2 1/4 cups heavy cream, divided
For the Decoration
- 3/4 cup heavy cream
- 2 tablespoons granulated sugar
- 3 Oreo cookies, halved
- 1/3 cup chocolate shavings
Instructions
- Grease a 9-inch springform pan with butter.
- Mix crushed Oreo cookies with melted butter until combined.
- Press firmly into the base of the pan and chill for 30 minutes.
- In a bowl, combine chopped chocolate, vanilla, and salt.
- Heat 3/4 cup heavy cream until just simmering, then pour over chocolate.
- Let sit for 1 minute, then whisk until smooth. Chill for 20 minutes.
- Whip 1 1/2 cups heavy cream to soft peaks.
- Gently fold the cooled chocolate mixture into the whipped cream until smooth.
- Spread the mousse over the chilled crust and smooth the top.
- Refrigerate for at least 6 hours or overnight.
- Whip remaining cream with sugar to stiff peaks.
- Pipe whipped cream on top and garnish with Oreo halves and chocolate shavings.
This Chocolate Mousse Cake should always be served chilled for the best texture and flavor.

Tips & Tricks
- Use high-quality chocolate for richer flavor
- Do not overwhip the cream
- Chill the ganache before folding for stability
- Press the crust firmly to prevent crumbling
- Use a hot knife for clean slices
Details
- Prep Time: 30 minutes
- Chill Time: 6 hours
- Total Time: 6 hours 30 minutes
- Yield: 8–10 slices
- Category: Dessert
- Method: No-Bake
- Cuisine: International
- Difficulty: Easy

Notes
- Substitute Oreos with chocolate biscuits
- Add espresso powder for deeper chocolate flavor
- Use dark chocolate for a less sweet version
Nutrition (Approximate per slice)
- Calories: 480
- Protein: 5g
- Carbs: 35g
- Fat: 35g
FAQ
Can I make Chocolate Mousse Cake ahead of time?
Yes, it’s best when made a day in advance.
Can I freeze this cake?
Yes, freeze without decorations and thaw before serving.
Why is my mousse not firm?
It may need more chilling time or properly whipped cream.
Can I use milk chocolate?
Yes, but it will be sweeter and less intense.
Do I need gelatin?
No, this recipe sets naturally from the whipped cream.
Storage
- Refrigerator: Store covered for up to 4 days
- Freezer: Freeze up to 1 month
- Serving: Keep chilled until ready to serve

Similar Recipes

Chocolate Mousse Cake
Ingredients
For the Oreo Crust
- 25 Oreo cookies finely crushed
- 5 tablespoons unsalted butter melted
- For the Chocolate Mousse Filling
- 8 ounces semisweet chocolate chopped
- 1 teaspoon vanilla extract
- 1 pinch salt
- 2 1/4 cups heavy cream divided
For the Decoration
- 3/4 cup heavy cream
- 2 tablespoons granulated sugar
- 3 Oreo cookies halved
- 1/3 cup chocolate shavings
Instructions
- Grease a 9-inch springform pan with butter.
- Mix crushed Oreo cookies with melted butter until combined.
- Press firmly into the base of the pan and chill for 30 minutes.
- In a bowl, combine chopped chocolate, vanilla, and salt.
- Heat 3/4 cup heavy cream until just simmering, then pour over chocolate.
- Let sit for 1 minute, then whisk until smooth. Chill for 20 minutes.
- Whip 1 1/2 cups heavy cream to soft peaks.
- Gently fold the cooled chocolate mixture into the whipped cream until smooth.
- Spread the mousse over the chilled crust and smooth the top.
- Refrigerate for at least 6 hours or overnight.
- Whip remaining cream with sugar to stiff peaks.
- Pipe whipped cream on top and garnish with Oreo halves and chocolate shavings.
- This Chocolate Mousse Cake should always be served chilled for the best texture and flavor.
Notes
- Substitute Oreos with chocolate biscuits
Conclusion
Chocolate Mousse Cake is a show-stopping dessert that combines rich chocolate flavor with a light, airy texture. Easy to prepare and perfect for any occasion, it’s a must-try for chocolate lovers.

