Copycat Costco Sheet Cake

Copycat Costco Sheet Cake Recipe

Imagine biting into a slice of cake that’s so fluffy and moist, it transports you back to childhood birthday parties, complete with joyful laughter and colorful balloons. This Copycat Costco Sheet Cake is not just a dessert; it’s a nostalgic experience that beckons to be made time and again. With its enchanting layers of tender cake and the light, airy vanilla cheesecake mousse, this treat is bound to charm your guests and family alike. And the best part? It requires minimal effort while delivering maximum flavor! Whether it’s for a special celebration or a sweet weeknight treat, this cake should be on your baking radar.

Are You Ready for a Slice of Heaven?

Have you ever found yourself yearning for something sweet, perhaps while scrolling through social media or reminiscing about past gatherings? It’s those moments when you realize—life is too short not to indulge in a luscious slice of cake! Picture this: a vibrant, celebratory cake, adorned with colorful sprinkles, just waiting to shine at your next event. What’s more inviting than a dessert that promises comfort, love, and unquestionable deliciousness?

Why You’ll Love This Recipe

Creating this Copycat Costco Sheet Cake is not only a delightful experience; it’s also straightforward. With easy preparation and minimal ingredients, you’ll find yourself in the kitchen crafting a dessert that captures joy in every bite. Ideal for family gatherings, parties, or just a simple weekend treat, this cake is a crowd-pleaser that guarantees smiles all around. Plus, it’s incredibly forgiving for novice bakers.

There’s nothing quite like that melt-in-your-mouth moment when you serve this cake, and your loved ones can’t get enough of it. A dessert this accessible means you’ll want to make it again and again!

Ingredients

Creating the unbelievable flavors in this Copycat Costco Sheet Cake doesn’t require complex ingredients. Here’s what you’ll need to captivate everyone with this showstopper:

Cooking spray
2 (15.25-oz.) boxes white cake mix (Pillsbury)
1/2 tsp. kosher salt
8 large egg whites
1 1/2 cups sour cream
1 cup whole milk
2/3 cup vegetable oil
2 tsp. pure vanilla extract (preferably clear)

For the Vanilla Cheesecake Mousse:

1 (8-oz.) pkg. cream cheese, room temperature
1/2 cup confectioners’ sugar
1/2 tsp. kosher salt
1 cup whole milk
1 (3.4-oz.) pkg. vanilla instant pudding
1 cup heavy cream

For the Frosting:

2 cups vegetable shortening (such as Crisco)
1/2 cup water
1 Tbsp. pure vanilla extract (preferably clear)
3/4 tsp. kosher salt
8 cups confectioners’ sugar, divided
Sprinkles, for decorating (optional)

Prepare your taste buds for an avalanche of flavor; with these ingredients, you’re set to create a masterpiece.

Timing

This iconic sheet cake can be made quickly, perfect for those impromptu celebrations, yet it also allows for a slow, mindful experience when you take your time to savor the process. In just over an hour, you can have a full layered cake ready to wow your guests. Imagine pulling rich, golden sponge cakes from the oven, the aroma wafting through your home, luring everyone to gather around.

Step-by-Step Guide

CAKE

Preheat your oven to 350 degrees Fahrenheit.
Grease and line two 13×9 metal baking pans with parchment paper, ensuring your cakes will slip out easily.
In a large bowl, whisk cake mix and salt.
Add in the egg whites, sour cream, milk, oil, and vanilla extract. Beat until everything is combined into a batter that looks as delectable as it tastes.
Divide the batter equally between your prepared pans, sending them to the oven to bake for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Once baked, allow the cakes to cool fully before trimming the tops to make even layers.

VANILLA CHEESECAKE MOUSSE

In a stand mixer, beat the cream cheese, confectioners’ sugar, and salt together until the mixture is smooth and velvety.
Gradually add in the milk and vanilla pudding mix, mixing until fully incorporated.
Finally, add the heavy cream and whip until thickened. The mousse should have the perfect consistency for spreading.

FROSTING

In another mixing bowl, beat shortening, water, vanilla, and salt until smooth.
Gradually add in the confectioners’ sugar, mixing until you achieve a fluffy and light frosting that makes you want to dig in right away.
To assemble, start with one layer of cake, followed by a generous helping of mousse. Place the other layer on top and cover the cake with the frosting, decorating with sprinkles as a final touch of cheer.

Nutritional Information

A humble serving of this Copycat Costco Sheet Cake offers approximately 400 calories. But let’s be honest; when a dessert is rich, fluffy, and loaded with flavors, a bit of indulgence is certainly warranted. Treat yourself and savor every crumb.

Healthier Alternatives

If you’re looking to make a healthier version, consider using a low-sugar cake mix or replacing the sour cream with Greek yogurt. For a dairy-free option, swap the milk and cream cheese for almond or coconut yogurt, and use non-dairy milk. Always feel free to experiment with the sweetness levels and incorporate wholesome ingredients for a twist on this classic.

Serving Suggestions

Nothing elevates a slice of Copycat Costco Sheet Cake quite like serving it alongside a scoop of velvety ice cream. Consider the combination of chocolate or vanilla ice cream! It’s perfect for birthdays or any festive gathering, making each occasion extra special. Why not bring this delicious cake to potlucks, neighborhood cookouts, or holiday celebrations?

Common Mistakes

As with any baking endeavor, certain pitfalls can be avoided:

Overbaking: Keep a close eye on your cakes as they approach the baking time. Overbaking can lead to a dry texture, robbing the cake of its moist charm.
Texture Issues: Ensure you do not overmix the batter; this can lead to a dense cake instead of a light, airy one.
Messy Assembly: Don’t rush the cooling process. Assembling your cake before it has fully cooled can lead to a messy situation, with layers sliding apart.

Storing Tips

You can keep slices of this indulgent cake fresh by storing them in an airtight container at room temperature for up to 3 days. For longer storage, slice the cake and freeze individual portions. When you’re ready to enjoy, simply thaw them in the fridge overnight, making it a fantastic make-ahead dessert option!

Tempting You to Bake It ASAP

If your taste buds are tingling and you’re dreaming of luscious layers and creamy frosting, now is the time to whip out your mixing bowl and prepare for this delectable Copycat Costco Sheet Cake. It promises to be a hit with everyone at the table, beckoning all chocolate enthusiasts and dessert lovers alike. Don’t wait; get baking!

FAQs

Can I use a different flavor of cake mix?

Absolutely! While this recipe calls for white cake mix, feel free to experiment with different flavors such as chocolate or lemon for a creative twist.

How long can I store this cake?

The cake will last 3 days at room temperature and can be frozen for several months, making it perfect for meal prep.

Can I make this cake gluten-free?

You can substitute the cake mix with a gluten-free alternative and adjust the other ingredients accordingly.

Can I use regular vanilla pudding instead of instant?

No, it is essential to use instant pudding for this recipe as it thickens quickly and creates the desired mousse consistency.

Is there a dairy-free option for frosting?

You can use a plant-based shortening and almond or oat milk to create a delicious dairy-free frosting option!

Let your baking adventure begin with this Copycat Costco Sheet Cake, a delectable dessert that promises to bring smiles, satisfaction, and a sprinkle of nostalgia to every occasion!