Costco Tuxedo Cake Recipe

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Introduction

If chocolate is your weakness, this Costco Tuxedo Cake will be right up your alley! It’s a layered masterpiece featuring airy cake, velvety mousse, and a rich ganache. The look alone is impressive, but the flavor is what truly wins everyone over.

Why Make This Recipe

This layered cake is a top choice for any special gathering—birthdays, holidays, or just a sweet indulgence at home. Once you take a bite, you’ll be hooked! It’s not only visually stunning, but the contrasting textures and flavors also make it a dessert people will remember.

How to Make Costco Tuxedo Cake

Despite its fancy appearance, crafting this cake is simpler than you might think. Just follow the steps, and you’ll have a crowd-pleasing dessert on your table in no time.

Ingredients

  • Dry Ingredients
    • 1¾ cups all-purpose flour
    • ¾ cup unsweetened cocoa powder
    • 1½ tsp baking soda
    • ½ tsp baking powder
    • ½ tsp salt
  • Cake Batter
    • 2 large eggs
    • 1½ cups granulated sugar
    • ½ cup vegetable oil
    • 1 cup buttermilk
    • 1 tsp vanilla extract
    • 1 cup hot coffee (or hot water)
  • White Chocolate Mousse
    • 1 cup white chocolate chips
    • ½ cup heavy whipping cream (for melting)
    • 1 cup heavy whipping cream (for whipping)
    • ¼ cup granulated sugar
  • Dark Chocolate Mousse
    • 1 cup dark chocolate chips
    • ½ cup heavy whipping cream (for melting)
    • 1 cup heavy whipping cream (for whipping)
    • ¼ cup granulated sugar
  • Ganache
    • 1 cup dark chocolate chips
    • ½ cup heavy cream
  • Optional Garnish
    • Chocolate shavings, curls, or sprinkles

Directions

  1. Preheat the Oven
    • Set your oven to 350°F (175°C). Prepare two 9-inch round cake pans by greasing them and lining the bottoms with parchment paper.
  2. Combine the Dry Mixture
    • In a large bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt.
  3. Prepare the Wet Mixture
    • In a separate bowl, blend the eggs, sugar, and oil until the mixture is smooth. Stir in the buttermilk and vanilla extract.
  4. Finish the Batter
    • Gradually add the dry ingredients to the wet ingredients, mixing just until combined. Then gently stir in the hot coffee (the batter will be somewhat thin).
  5. Bake the Cakes
    • Evenly divide the batter between the two cake pans. Bake for approximately 30–35 minutes, or until a toothpick inserted in the center comes out clean. Allow the layers to cool fully on a rack.
  6. White Chocolate Mousse
    • Melt the white chocolate chips with ½ cup of heavy cream, stirring until smooth. Let it cool slightly.
    • Whip 1 cup of heavy cream with ¼ cup of sugar until soft peaks form. Fold the whipped cream into the cooled white chocolate mixture.
  7. Dark Chocolate Mousse
    • Melt the dark chocolate chips with ½ cup of heavy cream, again stirring until smooth. Cool briefly.
    • Whip another 1 cup of heavy cream with ¼ cup of sugar to soft peaks. Fold this into the cooled dark chocolate mixture.
  8. Assemble the Layers
    • Place one cooled cake layer on a serving plate. Spread the white chocolate mousse on top.
    • Add the second cake layer over the white mousse, then spread the dark chocolate mousse on top.
  9. Make the Ganache
    • Warm ½ cup of heavy cream just until it begins to simmer. Pour over the dark chocolate chips, stirring until you get a silky consistency.
    • Drizzle or pour the ganache over the top of the cake, letting it trickle down the sides for a decorative finish.
  10. Chill the Cake
    • Refrigerate your assembled cake for at least two hours, allowing the mousse and ganache to set.
  11. Add Finishing Touches
    • Decorate with chocolate shavings, curls, or sprinkles if desired.

How to Serve Costco Tuxedo Cake

For the best flavor and texture, serve this cake chilled. Slice and present on individual plates, possibly alongside a scoop of vanilla ice cream or an extra swirl of whipped cream.

How to Store Costco Tuxedo Cake

Any leftover slices should be kept in the refrigerator, covered with plastic wrap or in a sealed container. Properly stored, it can stay fresh for up to a week.

Tips to Make Costco Tuxedo Cake

  1. Room Temperature Ingredients
    • Allow your eggs and buttermilk to sit out for a bit before mixing. This helps achieve a smoother batter.
  2. Leveling the Layers
    • If your cake layers dome, you can slice off the tops to create a flat surface for stacking.
  3. Chill Time is Key
    • Letting the mousse and ganache set in the fridge is crucial for a neat finish and clean slices.

Variation

For a fruity spin, add a layer of jam—such as raspberry or cherry—between the cake layers. This adds a burst of fresh flavor that pairs beautifully with the chocolate elements.

FAQs

Q: Can I use a different type of chocolate?
A: Absolutely! Feel free to use milk chocolate if you prefer a sweeter taste.

Q: How long will this cake last?
A: When kept properly covered in the fridge, it should remain delicious for about a week.

Q: Can I freeze this cake?
A: You can, but it’s best to freeze the cake layers before adding ganache. Wrap them tightly in plastic wrap and foil to protect them from freezer burn.

Enjoy your homemade Costco Tuxedo Cake—rich, layered, and guaranteed to delight any chocolate lover!

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