Introduction

This Copycat Olive Garden Black Tie Mousse Cake is a decadent dessert featuring layers of rich chocolate cake, silky chocolate and vanilla mousse, and a glossy ganache topping. Perfect for special occasions or impressing guests, this mousse cake combines deep chocolate flavors with a light, creamy texture.

A round chocolate and vanilla swirled cheesecake is cut into slices on a white marble surface, with a slice slightly pulled away showing four layers: dark chocolate crumb crust base, creamy beige cheesecake layer, milk chocolate mousse layer, and a glossy dark chocolate and white cream swirl topping. The top edge is decorated with twelve thick spirals of dark chocolate frosting and scattered mini dark chocolate chips surround the dessert. The overall color contrast is rich browns with creamy white swirls on top, giving a textured and inviting look. photo taken with an iphone --ar 4:5 --v 7

Ingredients

Cooking spray
1 1/4 c. (150 g) all-purpose flour
3/4 c. (150 g) granulated sugar
1/4 c. unsweetened cocoa powder
1 tsp. baking soda
1/2 tsp. kosher salt
3/4 c. brewed coffee
1/3 c. extra-virgin olive oil
1 tbsp. apple cider vinegar
1 tsp. pure vanilla extract
3 oz. dark chocolate (70% cacao), coarsely chopped
2 oz. semisweet chocolate, coarsely chopped
2 tbsp. unsalted butter
4 oz. cream cheese, softened
3/4 c. heavy cream
2 tbsp. confectioners’ sugar
5 oz. white chocolate chips
2 tbsp. unsalted butter
12 oz. semisweet chocolate, coarsely chopped
4 oz. dark chocolate (70% cacao), coarsely chopped
1 oz. white chocolate
1 1/2 c. heavy cream
2 c. semisweet mini chocolate chips
A piping bag and a large star tip

Instructions

Step 1: Preheat the oven to 350°F and position a rack in the center. Line a 9-inch springform pan with parchment paper and grease it with cooking spray.
Step 2: In a large bowl, whisk together the flour, granulated sugar, cocoa powder, baking soda, and salt. Add the brewed coffee, olive oil, apple cider vinegar, and vanilla extract. Whisk until just combined; a few lumps are fine. Pour the batter into the prepared pan.
Step 3: Bake the cake for about 18 minutes, or until a tester inserted into the center comes out clean. Let the cake cool in the pan for 15 minutes, then remove it from the pan and wipe the pan clean.
Step 4: For the chocolate mousse, melt the dark chocolate, semisweet chocolate, and 2 tablespoons butter in 15-second increments in the microwave, stirring until smooth.
Step 5: Using a handheld mixer, beat the softened cream cheese until smooth. Add the melted chocolate mixture and beat until combined, even if some streaks remain.
Step 6: In a separate bowl, whip the heavy cream and confectioners’ sugar until stiff peaks form. Gently fold the whipped cream into the chocolate-cream cheese mixture. Cover with plastic wrap and refrigerate.
Step 7: For the vanilla mousse, melt the white chocolate chips and 2 tablespoons butter similarly. Beat the cream cheese until smooth, add the melted white chocolate, and beat until combined.
Step 8: Whip the heavy cream and vanilla extract until stiff peaks form, then fold it into the white chocolate-cream cheese mixture. Cover and refrigerate.
Step 9: Line the edges of the springform pan with parchment paper again. Place the chocolate cake layer in the center, spread the chocolate mousse evenly over it, then spread the vanilla mousse layer on top. Refrigerate until firm.
Step 10: To make the ganache, combine the semisweet and dark chocolates in a heatproof bowl. In a separate small bowl, place the white chocolate. Heat the heavy cream until hot, then pour 1 tablespoon over the white chocolate and the rest over the dark chocolates. Let sit for 30 seconds, then stir each until smooth.
Step 11: Pour 1 cup of dark chocolate ganache over the cake and spread evenly. Drizzle white chocolate in concentric circles over the top and swirl with a toothpick. Refrigerate until set, about 20 minutes.
Step 12: Remove the springform pan sides carefully. Spread about ½ cup of reserved ganache around the sides of the cake using an offset spatula.
Step 13: Press mini chocolate chips around the sides until fully covered.
Step 14: Transfer remaining ganache to a piping bag fitted with a large star tip and pipe swirls around the cake edges. Refrigerate to set, about 20 minutes, before serving.

Tips & Variations

Use freshly brewed strong coffee to intensify the chocolate cake flavor without making it bitter.
Ensure cream cheese is softened to room temperature for smooth mousse texture.
If you don’t have a piping bag, use a plastic sandwich bag with a small corner cut off to pipe ganache swirls.
For a festive touch, sprinkle extra mini chocolate chips or chocolate shavings on top before serving.

Storage

Store the mousse cake covered in the refrigerator for up to 3 days. Keep it chilled to maintain the mousse’s texture. To serve, allow the cake to sit at room temperature for 10 minutes for easier slicing. Avoid freezing, as the mousse may lose its delicate texture upon thawing.

How to Serve

A rich dessert sliced into several pieces sits on a white marble surface, showing four distinct layers with a base of dark, moist chocolate cake, topped by a light creamy white layer, followed by a smooth milk chocolate layer, all covered by a shiny swirled mix of dark and white chocolate glaze. Around the edge, there are many thick, dark chocolate whipped cream rosettes, with small chocolate chips scattered loosely near the dessert on the marble. The slice removed reveals the clear, clean layers inside. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this cake ahead of time?

Yes, this mousse cake can be assembled a day in advance and refrigerated overnight. Just be sure to cover it well to prevent it from absorbing other fridge odors.

What can I use if I don’t have a springform pan?

A deep cake pan lined thoroughly with parchment can work, but removing the cake without damaging the delicate mousse layers will be more challenging. Using a springform pan is ideal for easy assembly and removal.