Chocolate Mousse Brownies are the ultimate dessert for chocolate lovers, featuring a dense, chewy fudge brownie base topped with a rich layer of airy chocolate mousse and finished with a silky ganache. This three-layer dessert is not just a feast for the eyes but also a delight for the palate, making it a perfect treat for any occasion. The combination of fudgy chocolate brownie and light mousse creates an experience that is both satisfying and indulgent. Let’s dive into this decadent recipe!
Why You’ll Love This Chocolate Mousse Brownies
There are countless reasons to fall in love with Chocolate Mousse Brownies. Here are a few:
- Rich and fudgy texture that satisfies your chocolate cravings.
- A light, airy mousse that perfectly balances the dense brownie.
- Quick and easy to prepare, making it a go-to dessert for any event.
- Can be made gluten-free by substituting flour with almond flour.
- Perfect for parties, as they are visually stunning and delicious.
- Versatile serving suggestions, including whipped cream or nuts.
With these features, it’s clear why these brownies are considered the best chocolate mousse brownies around!
Ingredients for Chocolate Mousse Brownies
Gather these items:
- 1/2 cup unsalted butter (Melted)
- 1 cup granulated sugar (For brownie)
- 2 large eggs (Room temperature)
- 1 tsp vanilla extract (Divided use)
- 1/3 cup unsweetened cocoa powder (Dutch process)
- 1/2 cup all-purpose flour (Sifted)
- 1/4 tsp salt (Balances flavor)
- 1 1/2 cups heavy whipping cream (Cold, for mousse)
- 1 cup semi-sweet chocolate chips (Melted and cooled for mousse)
- 1/4 cup powdered sugar (For mousse)
- 1/2 cup chocolate chips (For ganache)
- 1/4 cup heavy cream (Hot, for ganache)
- 2 tbsp chocolate shavings (Garnish)
How to Make Chocolate Mousse Brownies Step-by-Step
- Step 1: Preheat oven to 350°F and line an 8×8 inch pan with parchment paper.
- Step 2: Whisk melted butter, sugar, eggs, and 1 tsp vanilla; stir in cocoa, flour, and salt.
- Step 3: Bake for 20–25 minutes; let cool completely in the pan.
- Step 4: Whip heavy cream and powdered sugar to stiff peaks; fold in cooled melted chocolate.
- Step 5: Spread mousse over cooled brownies and refrigerate for 30 minutes.
- Step 6: Pour hot cream over chocolate to make ganache; spread over mousse and chill for 3 hours.
- Step 7: Top with chocolate shavings, slice with a hot knife, and serve.
Pro Tips for the Best Chocolate Mousse Brownies
Keep these in mind:
- Ensure your ingredients, especially the butter and eggs, are at room temperature for a smooth batter.
- For an extra touch, add a pinch of espresso powder to the brownie mix to enhance the chocolate flavor.
- Use a hot knife when slicing to achieve clean edges on your brownies.
- Let the brownies cool completely before adding the mousse layer for the best texture.

Best Ways to Serve Chocolate Mousse Brownies
Here are some delightful serving suggestions:
- Serve with a dollop of whipped cream on top for added creaminess.
- Top with chopped nuts for a delightful crunch, turning them into chocolate mousse brownies with nuts.
- Pair with a scoop of vanilla ice cream for a classic dessert experience.
How to Store and Reheat Chocolate Mousse Brownies
Store any leftover brownies in an airtight container in the refrigerator for up to 5 days. If needed, reheat briefly in the microwave. This dessert is perfect for meal prep as it keeps well and tastes just as great after a day or two.
Frequently Asked Questions About Chocolate Mousse Brownies
What’s the secret to perfect Chocolate Mousse Brownies?
The secret lies in allowing the brownies to cool completely before adding the mousse. This ensures the layers set properly, resulting in a beautifully structured dessert.
Can I make Chocolate Mousse Brownies ahead of time?
Absolutely! These brownies can be made a day in advance, making them perfect for parties or special occasions. Just keep them refrigerated until serving.
How do I avoid common mistakes with Chocolate Mousse Brownies?
To avoid issues, ensure your measurements are precise and do not overbake the brownies. A toothpick inserted should come out with a few moist crumbs for the fudgy texture.
Variations of Chocolate Mousse Brownies You Can Try
Here are some fun twists on this classic dessert:
- Try a chocolate mousse brownie layer cake by stacking layers of brownie and mousse.
- Substitute the all-purpose flour for a gluten-free blend to make gluten-free chocolate mousse brownies.
- Add peppermint extract to the mousse for a festive holiday treat.

For more delicious dessert ideas, check out our Gingerbread Tiramisu or Cranberry Custard Pie. If you’re looking for something savory, try our Sizzling Cheesy Beef Rice.
For more information on the health benefits of chocolate, you can visit Healthline.
Print
Chocolate Mousse Brownies: 7 Layers of Pure Indulgence
- Total Time: 235 minutes
- Yield: 16 servings 1x
- Diet: Vegetarian
Description
These indulgent Chocolate Mousse Brownies feature a dense, chewy fudge brownie base topped with a thick layer of light, airy chocolate mousse and a silky ganache finish.
Ingredients
- 1/2 cup unsalted butter (Melted)
- 1 cup granulated sugar (For brownie)
- 2 large eggs (Room temperature)
- 1 tsp vanilla extract (Divided use)
- 1/3 cup unsweetened cocoa powder (Dutch process)
- 1/2 cup all-purpose flour (Sifted)
- 1/4 tsp salt (Balances flavor)
- 1 1/2 cups heavy whipping cream (Cold, for mousse)
- 1 cup semi-sweet chocolate chips (Melted and cooled for mousse)
- 1/4 cup powdered sugar (For mousse)
- 1/2 cup chocolate chips (For ganache)
- 1/4 cup heavy cream (Hot, for ganache)
- 2 tbsp chocolate shavings (Garnish)
Instructions
- Preheat oven to 350°F and line an 8×8 inch pan with parchment paper.
- Whisk melted butter, sugar, eggs, and vanilla; stir in cocoa, flour, and salt.
- Bake for 20–25 minutes; let cool completely in the pan.
- Whip heavy cream and powdered sugar to stiff peaks; fold in cooled melted chocolate.
- Spread mousse over cooled brownies and refrigerate for 30 minutes.
- Pour hot cream over chocolate to make ganache; spread over mousse and chill for 3 hours.
- Top with chocolate shavings, slice with a hot knife, and serve.
Notes
- Prep Time: 30 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 420
- Sugar: 25 g
- Sodium: 150 mg
- Fat: 29 g
- Saturated Fat: 17 g
- Unsaturated Fat: 8 g
- Trans Fat: 0 g
- Carbohydrates: 40 g
- Fiber: 2 g
- Protein: 5 g
- Cholesterol: 70 mg
