Costco Slab Cakes: Sizes, Flavors, and Ordering Guide in 2025

Costco slab cakes are renowned for their affordability and large size, perfect for any big event. Each half-sheet cake serves about 48 people and costs approximately $24.99. You can select between vanilla or chocolate flavors, each filled with a delicious mousse and topped with buttercream icing.

Costco offers a variety of customizable designs like roses, balloons, and graduation themes, making these cakes ideal for all occasions. To order, visit your local Costco bakery and fill out the form at least 2-3 days in advance.

Costco Slab Cake 2024

Costco slab cakes, also known as sheet cakes, are a popular choice for many events due to their affordability, size, and delicious taste. Here’s everything you need to know about ordering and enjoying these cakes.

Sizes and Prices for Slab Cakes at Costco

Costco offers two main sizes for their slab (or sheet) cakes:

1. Half-Slab Cake
   • Dimensions: 12 inches by 16 inches
   • Servings: Approximately 48 people
   • Weight: About 9.5 pounds
   • Price: Around $24.99
2. 10-Inch Round Cake
   • Dimensions: 10 inches in diameter
   • Servings: Up to 16 people
   • Price: Approximately $15.99

These slab cakes are well-suited for large gatherings and are known for their affordability and quality​.

Costco Slab Cakes Flavors

Costco cakes come in two primary flavors:

1. White Cake: Filled with a vanilla cheesecake mousse and topped with white buttercream icing.
2. Chocolate Cake: Filled with chocolate mousse and topped with chocolate buttercream icing.

Design Options

Costco provides a range of design choices for different occasions:

• Roses: Available in various colors, suitable for weddings or anniversaries.
• Balloons: Ideal for birthdays with colorful balloon designs.
• Candles: Featuring colorful candles and rainbow sprinkles for birthdays.
• Rainbow: A vibrant design with a rainbow and clouds.
• Teddy Bear: A fun design perfect for children’s parties.
• Graduation: Customizable with school colors and graduation year.
• American Flag: Great for patriotic holidays like the 4th of July.

Customization and Ordering Process

While Costco offers various designs, they generally do not provide custom piping or intricate designs. Here’s how to order:

1. In-Person Order: Visit your local Costco and fill out an order form at the bakery section.
2. Order Details: Specify the size, flavor, design, and any custom message on the form.
3. Advance Notice: Place your order at least 48 hours in advance. On the pickup day, find your cake at the special order rack or ask a bakery employee for assistance.

Essential Tips for Ordering a Costco Slab Cake

Costco slab cakes are affordable, delicious, and easy to customize, perfect for any celebration.

1. Order In-Person: Visit the Costco bakery to place your order using the “Sheet Cake Order Form”.
2. Plan Ahead: Place your order at least 48 hours in advance. For special requests, order even earlier.
3. Size and Flavor Options: Choose between 10-inch round cakes (serves 16) and half-sheet cakes (serves 48). Flavors include vanilla with cheesecake mousse or chocolate with chocolate mousse.
4. Design Choices: Select from standard designs like roses, balloons, and seasonal themes. Custom piping is not available.
5. Pickup Tips: Pick up the cake close to your event time to ensure freshness. Provide your name at the bakery for pickup.
6. Membership Requirement: Ensure your Costco membership details match the order form for a smooth pickup.

Delivery Charges for Costco Cakes

1. Same-Day Delivery:
   • Instacart and Shipt:
     • Delivery fee: Starts at $3.99 for orders over $35.
     • Additional fees: Possible per-item fee for non-perishable items if the order is under $75.
     • Tipping: Suggested tip of 5%, minimum $2.
2. Two-Day Delivery:
   • CostcoGrocery:
     • Free delivery for orders over $75.
     • Prices online are generally higher to cover fulfillment costs.
3. Without Membership:
   • Non-members can use Instacart or Shipt but will face extra service fees.

Benefits of Choosing Costco Cakes

• Affordability: Costco cakes are much cheaper compared to other grocery stores and bakeries. For instance, a half-sheet cake at Costco costs around $24.99, while similar cakes at other stores can cost significantly more.
• Quality: Despite the low cost, Costco cakes are fresh and made by professional bakers.
• Convenience: The large size of the cakes makes them ideal for feeding a crowd, perfect for parties and gatherings.

Everything You Need to Know About Costco Slab Cakes: Customization, Flavors, and More

1. DIY Customization: Personalize your Costco cake at home using parchment paper stencils and sprinkles for unique designs.
2. Layered Cakes: Transform a sheet cake into a multi-layered cake by cutting and stacking, adding different frostings or fruit.
3. Flavor Options: Choose between vanilla with cheesecake mousse or chocolate with chocolate mousse, both praised for their taste.
4. Cost-Effective: A half-sheet cake costs about $24.99 and serves 48 people, making it a budget-friendly choice.
5. Frozen Freshness: Costco cakes are stored frozen to maintain freshness, and you can freeze them at home too.
6. Variety of Designs: Over 27 designs available, including seasonal themes and special occasions.

FAQs Regarding Slab Cake at Costco