The rich and indulgent Tuxedo Cake Costco Copy Cat Recipe is a stunning celebration of layered vegan chocolate and vanilla mousse, sandwiched between moist chocolate cake and fudgy brownies. This showstopper dessert perfectly balances the creamy sweetness of white chocolate mousse with the bold depth of semi-sweet chocolate mousse, bringing all the flavors and textures you love from the original Costco classic right into your own kitchen. Whether you’re a dedicated vegan or simply a dessert lover, this recipe will have you swooning with every bite and craving a second slice.

Tuxedo Cake Costco Copy Cat Recipe - Recipe Image

Ingredients You’ll Need

These ingredients are simple yet thoughtfully chosen to create a luxurious and harmonious flavor and texture profile. Each plays a crucial role in building the perfect Tuxedo Cake taste and structure.

Vegan white chocolate (8 ounces / 226g): Forms the creamy base of the vanilla bean mousse with a delicate sweetness.
Plant milk (4 fl oz / 60ml): Adds moisture and helps melt the white chocolate evenly for a smooth mousse.
Vanilla bean paste or extract (1 or 2 tsp): Infuses the white mousse with a rich vanilla flavor that complements the chocolate perfectly.
Agar powder (½ tsp and ¼ tsp): Acts as a natural vegan setting agent for the mousses, ensuring they hold their shape beautifully.
Aquafaba (¼ cup / 60ml + ¼ cup / 60ml): Provides a fluffy, airy texture to both mousses as a vegan egg white substitute.
Sugar (2 tbsp + 2 tbsp): Balances flavors and stabilizes the whipped aquafaba.
Cream of tartar (¼ tsp + ¼ tsp): Helps stabilize the aquafaba for a perfect lift in the mousse.
Vegan whipping cream (1½ cups + 1½ cups), whipped: Adds luxurious creaminess and volume to both mousse layers.
Semi-sweet vegan chocolate (8 ounces / 226g): Brings deep, rich chocolate flavor to the chocolate mousse layer.
Strong brewed coffee (4 tbsp / 60ml): Enhances the chocolate notes, giving the mousse complexity and depth.
Chocolate cake (½ recipe): Provides a moist and tender base that complements the creamy layers.
Fudge brownies (½ recipe): Adds a chewy, fudgy texture that contrasts deliciously with the mousse.

How to Make Tuxedo Cake Costco Copy Cat Recipe

Step 1: Prep Pans and Oven

First things first, grease and line your 1/8 and ¼ sheet pans with parchment paper to ensure the cakes come out cleanly. Preheat your oven to 350°F (175°C), so it’s ready when your batter is prepared.

Step 2: Bake the Cakes

Prepare your chocolate cake and fudge brownies according to your favorite recipes or the notes provided, then bake them in the prepped pans. Once baked, allow them to cool completely, which is key for neat assembly later.

Step 3: Prepare the Pan and Cut the Cake

Line a loaf pan generously with plastic wrap for easy unmolding later on. Trim and cut your cooled cake and brownies to fit snugly into this pan, as these layers will form the base and top of your beautiful Tuxedo Cake.

Step 4: Make the Vanilla Bean Mousse

Warm your plant milk, vanilla bean paste, and agar powder gently until the agar dissolves completely. Combine this mixture with melted vegan white chocolate so everything melds smoothly. Next, carefully fold in the whipped aquafaba and vegan whipping cream to create a light, airy vanilla mousse. Pour this luscious mixture into the loaf pan, layering over the brownie pieces, then refrigerate until it starts to set.

Step 5: Prepare the Chocolate Mousse

Melt the semi-sweet vegan chocolate and whisk it together with agar powder and strong brewed coffee. The coffee amps up the chocolate flavor, making it richer and more sophisticated. Once combined, fold in the whipped aquafaba and vegan whipping cream, building a fluffy, velvety chocolate mousse.

Step 6: Assemble the Layers and Chill

Pour the chocolate mousse carefully over the vanilla bean mousse layer, distributing it evenly. Place the remaining cake layer on top to seal your cake. Refrigerate the assembled Tuxedo Cake Costco Copy Cat Recipe overnight or chill it in the freezer for at least four hours to ensure it sets perfectly before serving.

Step 7: Serve with Style

When ready, unmold your cake from the pan, smooth it out with parchment or plastic wrap, and optionally glaze with a shiny ganache or dust with cocoa powder. Add decorative touches if you like for that stunning, bakery-quality finish.

How to Serve Tuxedo Cake Costco Copy Cat Recipe

Garnishes

Fresh berries, a sprinkle of shaved vegan chocolate, or a dusting of powdered sugar make fantastic garnishes that highlight the cake’s flavors while adding visual elegance. Mint leaves can also add a fresh pop of color and brightness.

Side Dishes

Serve your Tuxedo Cake with a scoop of vegan vanilla ice cream or a dollop of whipped coconut cream to complement the richness. A cup of rich coffee or an herby tea also pairs beautifully with this decadent dessert.

Creative Ways to Present

For a crowd or special occasion, slice the cake into individual portions and layer each slice with a drizzle of vegan caramel or chocolate sauce. You can also serve it as mini parfaits by layering the components in glasses for a playful twist on the classic dessert.

Make Ahead and Storage

Storing Leftovers

Store your leftover Tuxedo Cake covered tightly in the refrigerator for up to 4 days. Keeping it chilled preserves the mousse texture and flavors while preventing any drying out.

Freezing

This cake freezes wonderfully. Wrap it securely in plastic wrap and place it in an airtight container for up to 1 month. Thaw it overnight in the fridge before serving to maintain its texture and taste.

Reheating

Since this is a cold dessert, reheating is not necessary or recommended. Just let it sit at room temperature for 10–15 minutes before slicing to soften slightly for best enjoyment.

FAQs

Can I make the Tuxedo Cake Costco Copy Cat Recipe gluten-free?

Absolutely! Use gluten-free flour blends for both the cake and brownie layers to keep the recipe delicious and safe for gluten-sensitive guests without sacrificing texture or flavor.

What is aquafaba and why is it used?

Aquafaba is the liquid from cooked chickpeas or beans, used here as an excellent vegan substitute for egg whites. It whips up light and fluffy, giving the mousse its airy, ethereal texture.

Can I substitute agar powder with gelatin?

Yes, but gelatin is animal-based, so it wouldn’t be vegan. If you’re okay with that, use gelatin in similar quantities. Otherwise, agar powder is the best plant-based setting agent for this recipe.

How long does it take to set the mousse layers?

Chilling the mousse layers overnight or freezing for at least 4 hours ensures they fully set with the perfect consistency for slicing and serving.

Can I use regular dairy whipping cream instead of vegan?

You can, but to replicate the Costco Tuxedo Cake experience faithfully and keep it plant-based, vegan whipping cream is recommended both for taste and texture.

Final Thoughts

If you want to wow your friends and family with a dessert that’s both impressive and comforting, this Tuxedo Cake Costco Copy Cat Recipe is a must-try. It’s a labor of love that pays off with every rich, creamy, and delightfully layered bite. Whip it up and watch everyone fall head over heels for this vegan spin on a beloved classic!

Tuxedo Cake Costco Copy Cat Recipe

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4.4 from 41 reviews

Author: admin
Total Time: 9 hours (including chilling time)
Yield: 12 servings 1x
Diet: Vegan

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Description

This Tuxedo Cake Costco Copy Cat Recipe is a decadent layered vegan dessert featuring rich white chocolate vanilla mousse and dark chocolate mousse with layers of moist vegan chocolate cake and fudge brownies. Perfect for special occasions, it combines creamy textures and intense chocolate flavors in an impressive chilled no-bake cake that sets overnight.

Ingredients

Scale

Vanilla Bean Mousse

8 ounces (226g) vegan white chocolate
4 fl oz (60ml) plant milk
1 or 2 teaspoons vanilla bean paste or extract
½ teaspoon agar powder
¼ cup (60ml) aquafaba
2 tablespoons (28g) sugar
¼ teaspoon cream of tartar
1½ cups vegan whipping cream, whipped

Chocolate Mousse

8 ounces (226g) semi-sweet vegan chocolate
4 tablespoons (60ml) strong brewed coffee
½ teaspoon agar powder
1½ cups vegan whipping cream, whipped
¼ cup (60ml) aquafaba
¼ teaspoon cream of tartar
2 tablespoons (28g) sugar

Cake Layers

½ recipe vegan chocolate cake (prepared as per your recipe, baked in 1/8 sheet pan)
½ recipe vegan fudge brownies (prepared as per your recipe, baked in ¼ sheet pan)

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Instructions

Prep Pans & Oven: Grease and line 1/8 and ¼ sheet pans with parchment paper. Preheat your oven to 350°F (175°C) to prepare for baking your cakes.
Bake the Cakes: Prepare your vegan chocolate cake and fudge brownie batter according to your preferred recipes. Pour into the lined pans and bake until fully cooked. Allow to cool completely.
Cool & Prepare: Once the cake and brownies are cooled, line a loaf pan with plastic wrap. Cut the cake and brownie into pieces sized to fit inside the loaf pan to create the layers.
Make Vanilla Bean Mousse: Heat the plant milk with vanilla bean paste and agar powder until hot and agar is dissolved, then combine this with melted vegan white chocolate. Whip the aquafaba with sugar and cream of tartar until stiff peaks form. Gently fold the whipped aquafaba and vegan whipping cream into the white chocolate mixture to create a light mousse. Pour this mousse into the loaf pan layering with chunks of brownie. Refrigerate to allow it to set.
Make Chocolate Mousse: Melt the vegan semi-sweet chocolate and mix it thoroughly with agar powder dissolved in brewed strong coffee. Whip aquafaba with sugar and cream of tartar until stiff and fold together with whipped vegan cream into the chocolate mixture to make a rich mousse layer.
Assemble & Chill: Pour the chocolate mousse over the vanilla bean mousse layer in the loaf pan, then top with the remaining cake layer cut to fit. Cover and refrigerate overnight or freeze for at least 4 hours to fully set the cake layers.
Serve: Unmold the chilled cake by lifting it out with the plastic wrap. Glaze the cake with your choice of ganache and optionally decorate for an elegant finish. Slice and serve chilled.

Notes

This recipe uses vegan versions of white chocolate, semi-sweet chocolate, and whipping cream for a fully vegan dessert.
You will need separate recipes for the vegan chocolate cake and fudge brownies as base layers; be sure they fit the specified pan sizes.
Agar powder is used as a vegan gelatin substitute to help the mousse set properly.
Allow the cake to chill overnight for best flavor and texture development.
Using strong brewed coffee in the chocolate mousse enhances depth of chocolate flavor.
Optional ganache for glaze can be made from melted vegan chocolate and a splash of plant milk.

Prep Time: 45 minutes
Cook Time: 1 hour 30 minutes
Category: Dessert
Method: No-Cook
Cuisine: American