COPYCAT COSTCO CHOCOLATE MOUSSE CAKE

Copycat Costco Chocolate Mousse Cake made easy with a cake mix, a luscious chocolate mousse & topped with decadent chocolate frosting and cookie crumbs!

For those who crave the rich, indulgent taste of Costco’s Chocolate Cake, recreating it at home can be simple and satisfying. By using a cake mix, preparation time is cut down significantly without sacrificing flavor. The addition of cookie crumbs adds the perfect touch, making each bite of this triple chocolate mousse cake even more enjoyable!

Mousse Cake Made At Home- Costco Copycat Recipe

Costco Chocolate Mousse Cake is a staple at the Costco bakery and makes an appearance at many parties and gatherings. It is a delicious rich chocolate cake with a layer of chocolate mousse in the middle. The whole cake gets topped off with an amazing chocolate fudge frosting. The cake starts with a cake mix, but by changing the ingredients we turn it into a bakery style cake.

Whether for a special occasion or a casual gathering, this chocolate mousse cake is sure to be a hit. This dessert recipe is straightforward, and the results are remarkably delicious!

Why You Will Love This Chocolate Cake Recipe

• Simple recipe: This decadent dessert is quick to prepare with basic ingredients. The use of a cake mix simplifies the baking process, making it accessible for bakers at any skill level.
• Decadent Flavors: The rich chocolate pudding mousse layer provides a smooth and creamy contrast to the cake. It enhances the chocolate experience, ensuring every bite is indulgent. Layers of chocolate ensure a treat for all the chocolate lovers out there.
• Versatile Presentation: Chocolate Mousse Cake is also a crowd-pleaser. It combines familiar flavors in a way that appeals to both adults and children alike. It’s perfect for celebrations or casual gatherings.

Ingredients for Chocolate Mousse Cake

Cake

Cake mix: To simplify this cake recipe, use one 13.5-oz chocolate fudge cake mix, any brand you prefer will work great.

Eggs: Add 4 eggs to make the cake nice and fluffy in texture.

Butter: Using ⅓ cup of butter will give the cake a nice rice flavor.

Milk: You will need 1 ¼ cup of milk to help the cake stay moist as it bakes.

Chocolate Mousse filling

Heavy cream: Use 3 cups of heavy whipping cream to make the homemade whipped topping for this delicious dessert.

Pudding mix: For amazing flavor in this cake filling, you need one 5.9-oz instant chocolate pudding mix.

Chocolate Frosting

Corn syrup: For a thick, sweet cake topping add in ½ cup of corn syrup.

Chocolate chips: Using 4 cups of semisweet chocolate chips will make the frosting rich in flavor.

Butter: Add 2 cups of butter, softened, to create a rich, thick cake topping.

Powder sugar: Sweeten the frosting by using 2 cups of powdered sugar in this recipe.

Cocoa powder: You need 1 cup of unsweetened cocoa powder to add another layer of deep chocolatey goodness.

Vanilla extract: Enhance all the incredible flavors by adding 1 teaspoon of vanilla extract.

Cookies: Use 10 chocolate sandwich cookies, blended finely, to coat the cake well.

How to make Copycat Costco Chocolate Mousse Cake

Chocolate cake

Start by preheating the oven to 350°F. Then grease two 9-inch cake pans and set them aside.

Next in a large bowl combine the cake mix, eggs, melted butter, and milk. Beat ingredients with an electric mixer for 2 minutes on medium speed.

Then divide the batter evenly between the 2 pans. Place them in the preheated oven and bake for 20 minutes or until a toothpick inserted in the middle comes out clean. Let the cakes cool completely before adding the filling and frosting. This generally takes 2-3 hours.

Mousse filling

When the cakes are cooled, prepare the filling. In a large bowl combine the heavy whipping cream and the dry instant pudding mix. Using an electric mixer beat the ingredients until combined and fluffy.

Place one cooled cake layer on a large plate or cake stand. Top with all the chocolate mousse, and then place the other cake layer on top of it. Gently cover the cake with plastic wrap and place it in the fridge while you prepare the chocolate frosting.

Frosting

Next in a microwave safe bowl, melt the corn syrup and chocolate chips for 1:30 in the microwave. Stir gently, then add time in 30 second intervals until the chocolate chips are all melted, and the mixture is smooth.

Set the chocolate mixture aside to cool for about 30 minutes. It should be cooled, but not hardened.

After that, in a separate large bowl, using an electric mixer, whip the butter, powdered sugar, cocoa powder, and vanilla extract. Then beat in the cooled chocolate mixture.

Transfer about 1 cup of the frosting to a piping bag with an open star tip.

Frost the cake with the remaining frosting until covered and smooth.

Assemble

Now in a blender or food processor, blend the cookies to a fine crumb. Take the blended cookie crumbs and coat the outside of the cake, using your hands to press the crumbs into the side of the cake.

Pipe the additional frosting around the top edge of the cake. Use a fork to make squiggly lines across the top. Slice, serve, and enjoy this decadent treat!

Variations of this Chocolate Mousse Cake

This Copycat Costco Chocolate Mousse Cake can be adapted in several ways to suit different tastes.

Flavor Variations:

• Mint Chocolate: Add peppermint extract to the mousse for a refreshing flavor.
• Mocha: Mix instant coffee granules into the pudding for added depth.
• White Chocolate Mousse: Substitute chocolate pudding with white chocolate pudding.
• Fruit Mousse: Use flavored pudding like strawberry or raspberry for a fruit twist.

Toppings:

• Nuts: Sprinkle chopped hazelnuts or almonds on top for added crunch.
• Fresh Berries: Add fresh raspberries or strawberries for a burst of color and flavor.

Cake Mix Choices:

• Devil’s Food Cake: Use devil’s food cake mix for a richer chocolate experience.
• Vanilla Cake Mix: A vanilla cake mix can lighten the overall flavor.

How do I store leftover chocolate mousse cake?

Store chocolate mousse cake in an airtight container. It can be kept in the refrigerator to maintain its freshness. Always ensure it is well-covered to prevent it from absorbing odors.

When properly stored, chocolate mousse cake typically remains fresh for 3 to 5 days in the refrigerator. After this period, the quality may start to decline, especially the mousse.

How long can chocolate mousse cake sit at room temperature?

Chocolate mousse cake should not sit at room temperature for more than 2 hours. After this time, it may not be safe to consume due to the ingredients in the mousse.

Try more of our favorite rich, chocolatey recipes here:

• OLYMPIC VILLAGE CHOCOLATE MUFFINS
• CHOCOLATE CHIP S’MORES COOKIES
• MINT CHOCOLATE CUPCAKES
• CHOCOLATE ZUCCHINI CAKE
• CHOCOLATE PEANUT BUTTER BANANA BREAD
• CHERRY CHOCOLATE MUFFINS
• BAKED CHOCOLATE GLAZED DONUTS
• CHOCOLATE PANCAKES
• NO BAKE CHOCOLATE MARSHMALLOW BARS
• CHOCOLATE LAVA CAKES
• NO-BAKE HOT CHOCOLATE CHEESECAKES
• TRIPLE CHOCOLATE BROWNIES
• MINT OREO CHOCOLATE MOUSSE CUPS
• DOUBLE CHOCOLATE BANANA BARS
• CHOCOLATE BUNDT CAKE WITH PEANUT BUTTER GLAZE
• MINT CHOCOLATE POKE CAKE
• HOT CHOCOLATE SNACK MIX

Copycat Costco Chocolate Mousse Cake comes together easily with a boxed cake mix, a smooth mousse, and a thick rich frosting. This triple chocolate mousse cake is a perfect combination of light textures with decadent flavors.