Costco cakes are a popular choice for birthdays, graduations, showers, and large gatherings because the bakery offers customizable cakes in two sizes, with simple flavor choices and decorations. In 2026, Costco’s custom cake options include 10-inch round and half-sheet cakes, with prices varying by location and ordering method.
How Much Does Costco Cake Cost?
Costco’s custom cake pricing depends on the location and whether you order through the warehouse bakery or Costco’s same-day delivery service. The current Costco delivery listings show a 10-inch round custom cake at about $20.42 and a half-sheet custom cake at about $31.77 in the locations checked.
| Cake size | Servings | Current delivery listing |
|---|---|---|
| 10-inch round | 16 | About $20.42 |
| Half sheet | 48 | About $31.77 |
Warehouse bakery prices can be different, so treat online delivery pricing as a location-specific reference rather than a nationwide fixed price.
Costco Sheet Cake Sizes and Prices
The half-sheet cake is the main choice for large celebrations. Costco’s current custom cake information says it serves 48 people. The 10-inch round serves 16 people.
The half sheet makes sense for events with many guests, while the round cake is more practical for a smaller birthday or family gathering.
Costco’s current custom-cake system lists only these two sizes: 10-inch round and half sheet.
What Kind of Cake Does Costco Offer?
Costco’s custom cakes currently come in two main flavors:
- Vanilla cake with vanilla cheesecake mousse filling and white buttercream icing.
- Chocolate cake with chocolate mousse filling and chocolate buttercream icing.
The choice is straightforward rather than highly customizable. Costco focuses on a few standard cake combinations and lets customers personalize the design, message, and writing color.
Costco Cake Catalog and Decoration Options
Costco’s online custom-cake catalog includes a range of designs for different occasions. Current options include American Flag, Balloons, Baby Shower, Candles, Cross, Daisy, Rainbow, Roses, Scored Roses, and several seasonal or holiday themes.
Available themes can include:
- Birthday and celebration designs
- Baby shower designs
- Graduation
- Patriotic designs
- Floral decorations
- Rainbow designs
- Holiday themes
- Plain cakes
Customers can also add a written message of up to 30 characters. Writing colors include red, orange, yellow, green, blue, purple, pink, brown, and black.
Because designs can change, check the options shown for your local Costco when placing the order.
Costco Cake Designs
Costco cake designs cover a range of occasions, including birthdays, graduations, baby showers, holidays, and other celebrations. Customers can choose from available bakery designs and add a personalized message to make the cake fit the event.
Common design categories include:
- Birthday designs: Balloons, candles, and colorful decorations.
- Floral designs: Roses, daisies, and other flower-themed options.
- Baby shower designs: Designs created for baby showers and related celebrations.
- Graduation designs: Celebration-themed decorations for graduates.
- Patriotic designs: American Flag, Patriotic Stars, and related designs.
- Religious designs: Cross-themed cake designs.
- Simple designs: Plain cakes for customers who prefer a basic appearance.
Costco also offers different writing colors and allows customers to add a short message to many custom cakes. The available designs can change by season, occasion, and location, so the current selection at your local warehouse may differ from another Costco.
How to Order a Costco Cake Online or at the Bakery
Costco offers custom cakes through participating warehouse bakeries and, in some areas, through its online delivery service. Online ordering lets you choose the cake size, flavor, design, message, and writing color before selecting an available delivery option.
For online custom cakes, Costco currently requires at least 72 hours of preparation time. Availability, delivery options, and pricing can vary by location.
How the Ordering Process Works
- Choose a 10-inch round or half-sheet cake.
- Select vanilla or chocolate.
- Pick an available cake design.
- Enter your personalized cake message.
- Choose the available writing color.
- Select pickup or delivery if offered in your area.
- Review the order details and submit it.
Costco’s online selection and local bakery options may not be identical. If online ordering is unavailable for your location, contact or visit your nearest Costco bakery to check custom cake availability and ordering requirements.
Costco Cake Ingredients
The exact ingredient list should be checked on the product information provided by Costco or the bakery because recipes and formulations can change.
For the current custom cakes, Costco identifies the main filling and icing as:
- White cake: vanilla cheesecake mousse filling and white buttercream icing.
- Chocolate cake: chocolate mousse filling and chocolate buttercream icing.
If you have a food allergy or need to avoid a particular ingredient, do not rely only on the cake name. Check the current ingredient and allergen information with Costco before ordering.
Costco-Style Vanilla Sheet Cake Recipe
This homemade vanilla sheet cake is inspired by the classic Costco-style celebration cake. It combines soft vanilla cake layers with a creamy cheesecake-style filling and smooth vanilla buttercream. The recipe makes a large cake that works well for birthdays, graduations, showers, and other gatherings.
Ingredients
Vanilla Cake
- 5 1/4 cups cake flour
- 3 1/3 cups granulated sugar
- 2 tablespoons baking powder
- 1 1/2 teaspoons salt
- 1 1/2 cups unsalted butter, softened
- 8 large egg whites, room temperature
- 2 large eggs, room temperature
- 2 cups whole milk, room temperature
- 1 1/2 tablespoons vanilla extract
Cheesecake-Style Filling
- 8 ounces softened cream cheese
- 1/2 cup powdered sugar
- 1 1/2 cups heavy cream
- 1/2 cup whole milk
- 1 package (3.4 ounces) instant vanilla pudding mix
Vanilla Buttercream
- 1 pound unsalted butter, softened
- 7 cups confectioners’ sugar
- 2 tablespoons vanilla extract
- A small amount of milk or cream as needed
- Rainbow sprinkles or other decorations
How to Make the Cake
1. Bake the Cake Layers
Heat the oven to 350°F. Grease two 9×13-inch cake pans and line the bottoms with parchment paper.
Combine the cake flour, sugar, baking powder, and salt in a mixing bowl. Add the softened butter and mix until the ingredients resemble fine crumbs.
Add the egg whites and whole eggs gradually, mixing after each addition. Scrape the bowl as needed. Pour in the milk in several additions, mixing between each one, then blend in the vanilla.
Divide the batter between the prepared pans. Bake for about 26–30 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cakes to cool briefly in their pans before transferring them to wire racks. Let them cool completely before assembling.
For easier handling, the cooled layers can be refrigerated for a couple of hours before trimming.
2. Prepare the Creamy Filling
Beat the softened cream cheese until smooth. Add the powdered sugar and mix until well combined.
Pour in the heavy cream and milk, then add the dry vanilla pudding mix. Continue mixing until the filling becomes thick and creamy.
Keep the filling chilled until you’re ready to assemble the cake.
3. Assemble the Layers
Place one cooled cake layer on a large serving board or platter.
Spread the cheesecake-style filling evenly across the top. Place the second cake layer over the filling and press gently so the layers sit evenly.
Refrigerate the assembled cake while preparing the frosting.
4. Make the Vanilla Buttercream
Beat the softened butter until creamy. Gradually add the confectioners’ sugar, mixing slowly at first to prevent the sugar from spilling out of the bowl.
Add the vanilla and enough milk or cream to reach a smooth spreading consistency. Beat the frosting until it becomes light and fluffy.
5. Decorate
Cover the entire cake with an even layer of buttercream using an offset spatula.
For a bakery-style finish, place some frosting into a piping bag fitted with a large star tip. Pipe a decorative border around the edges and finish with rainbow sprinkles or your preferred decorations.
Refrigerate the cake until the frosting becomes firm.
Serving and Storage
For the best texture, let the cake sit at room temperature for a short time before serving. Keep leftovers covered and refrigerated.
Because this recipe makes a large 9×13-inch layered cake, it is suitable for celebrations where several people will be served.
Tips for Better Results
- Bring refrigerated ingredients to room temperature before mixing.
- Spoon cake flour into measuring cups rather than packing it down.
- Let the cake layers cool completely before adding the filling.
- Chill the assembled cake before frosting if the layers feel soft.
- Add sprinkles soon after piping the frosting so they stick properly.
- Keep the finished cake refrigerated because of the cream-based filling.
Recipe Note
This is a Costco-inspired homemade version, not Costco’s official bakery recipe. The flavor, texture, and decoration can vary from the cakes sold at Costco warehouses.
What Is the Best Cake at Costco?
The best choice depends mainly on the event and the flavor your guests prefer.
Choose the vanilla cake if you want a lighter, classic option with vanilla cheesecake mousse and white buttercream.
Choose the chocolate cake if your guests prefer a richer chocolate flavor with chocolate mousse filling and chocolate buttercream.
For a large birthday party, graduation, or office event, the half sheet is the practical option because it serves 48 people. For a smaller gathering, the 10-inch round is easier to manage.
Costco Cake FAQs
How much does Costco cake cost?
Current Costco same-day delivery listings show custom 10-inch round cakes at about $20.42 and half-sheet cakes at about $31.77 in the locations checked. Warehouse bakery prices may differ by location and ordering method.
How do I order a cake at Costco?
You can order a custom cake through the Costco bakery or through Costco’s online custom-cake service where available. Online custom cakes require at least 72 hours of preparation.
How much is Costco’s birthday cake?
A birthday cake uses the same custom cake sizes and pricing structure rather than having a separate birthday-cake price. Current online listings show approximately $20.42 for a 10-inch round and $31.77 for a half sheet in the location checked.
What kind of cake does Costco offer?
The current custom-cake selection includes vanilla and chocolate. The vanilla cake has vanilla cheesecake mousse filling and white buttercream icing, while the chocolate version has chocolate mousse filling and chocolate buttercream icing.
How much is Costco cake in 2026?
There is no single nationwide price because Costco pricing can vary by location and ordering method. Current Costco delivery listings provide a useful 2026 reference, with 10-inch round and half-sheet custom cakes listed at about $20.42 and $31.77 respectively in the locations checked.
What is the best cake at Costco?
For a classic flavor, vanilla with cheesecake mousse is a popular straightforward choice. Chocolate with chocolate mousse is better suited to guests who prefer a richer chocolate dessert. The half sheet is the better option when serving a large group.
Final Takeaway
Costco’s custom bakery cakes remain a practical option for large celebrations because the ordering process is simple, customization is straightforward, and the half-sheet cake serves up to 48 people. The main choices are vanilla or chocolate, with multiple decoration themes and personalized writing. Prices and availability can vary by warehouse, so confirm the current details with your local Costco before placing an order.
