Costco Tuxedo Cake Recipe

The Costco Tuxedo Cake is a rich and delicious dessert that combines the smoothness of white chocolate mousse with the deep flavor of dark chocolate mousse. This cake, layered and drizzled with ganache, is perfect for any celebration or simply to indulge in a sweet treat at home. Whether you’re a chocolate lover or just looking for a show-stopping cake, this recipe will not disappoint!

Why Make This Recipe

Making the Costco Tuxedo Cake at home is a great way to impress your family and friends. It’s a delightful blend of flavors and textures. The combination of white and dark chocolate makes it visually stunning, while each bite delivers a creamy and decadent experience. Plus, baking it yourself allows you to customize the ingredients and make it just the way you like it!

How to Make Costco Tuxedo Cake

Ingredients:

1 3/4 cups all-purpose flour
3/4 cup unsweetened cocoa powder
1 1/2 tsp baking soda
1/2 tsp baking powder
1/2 tsp salt
2 large eggs
1 1/2 cups granulated sugar
1/2 cup vegetable oil
1 cup buttermilk
1 tsp vanilla extract
1 cup hot coffee or hot water
1 cup white chocolate chips
1 1/2 cups heavy whipping cream, divided
1/4 cup granulated sugar (for mousse)
1 cup dark chocolate chips
1/2 cup heavy cream (for ganache)
1 cup dark chocolate chips (for ganache)
Optional: Chocolate shavings, curls, or sprinkles for garnish

Directions:

Preheat the oven to 350°F (175°C) and grease two 9-inch round cake pans.
In a bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt.
In another bowl, beat the eggs, granulated sugar, and vegetable oil until smooth. Mix in the buttermilk and vanilla.
Combine the wet and dry ingredients. Stir in the hot coffee until well mixed.
Bake for 30-35 minutes. Let the cakes cool completely.
For the white chocolate mousse, melt the white chocolate with 1/2 cup of cream over low heat. Let it cool slightly. Whip the remaining cream with sugar and fold it into the melted white chocolate.
For the dark chocolate mousse, melt the dark chocolate with 1/2 cup of cream. Let it cool, then whip the remaining cream with sugar and fold it into the dark chocolate.
To assemble the cake, place one layer on a plate and spread the white chocolate mousse on top. Add the second layer and spread the dark chocolate mousse on top.
For the ganache, heat 1/2 cup heavy cream until it simmers. Pour it over the dark chocolate and stir until smooth. Pour the ganache over the cake.
Refrigerate the cake for at least 2 hours. Garnish with chocolate shavings, curls, or sprinkles if desired.

How to Serve Costco Tuxedo Cake

Serve the Costco Tuxedo Cake chilled for the best flavor. Slice it into pieces and enjoy it on its own or with a scoop of vanilla ice cream for an extra treat!

How to Store Costco Tuxedo Cake

Store any leftover cake in the refrigerator. Make sure it is covered to keep it fresh. The cake can last in the fridge for about 3-4 days.

Tips to Make Costco Tuxedo Cake

Ensure all ingredients are at room temperature before starting to make the batter.
Use high-quality chocolate for both the mousse and ganache for the best flavor.
Don’t rush the chilling time; letting the cake set in the refrigerator allows the flavors to meld beautifully.

Variation

You can easily alter the recipe by adding different flavors or ingredients to the mousse. Consider adding a hint of espresso powder to the dark chocolate mousse, or add some fruit like raspberries between the layers for a fruity twist.

FAQs

1. Can I make this cake ahead of time?
Yes! You can bake the cake layers in advance and store them in the refrigerator for a day or two before assembling.

2. Can I freeze the cake?
Absolutely! Wrap the cake layers tightly in plastic wrap and aluminum foil, then freeze. When you’re ready to enjoy, thaw the layers in the fridge overnight before assembling.

3. What can I use instead of buttermilk?
If you don’t have buttermilk, you can substitute with milk mixed with a tablespoon of vinegar or lemon juice. Let it sit for about 5-10 minutes before using.