The Ultimate 2025 Guide: How Much Does A Costco Sheet Cake Cost Now? (And Is It Still The Best Deal?)

The Costco half-sheet cake remains one of the greatest party-planning secrets in America, but its legendary price has recently seen an adjustment. As of late 2024 and confirmed into 2025, the custom-ordered Costco half-sheet cake is priced at approximately $27.99, reflecting a recent price increase from its long-standing $24.99 and original $18.99 price tags. Despite the modest increase, the cake still offers an unparalleled value, serving 48 people for a cost of only about $0.58 per slice, making it a budget-friendly powerhouse for large gatherings, birthdays, and corporate events.

This detailed guide cuts through the rumors and outdated information to provide you with the most current data on the Costco sheet cake, including the exact price, available flavors, customization options, and the simple ordering process. If you are planning an event and need a high-quality, massive dessert without breaking the bank, the Costco bakery’s half-sheet cake is still your champion, offering a superior two-layer design and premium filling that competitors simply can't match at this price point.

Costco Sheet Cake Price, Size, and Unbeatable Value Breakdown (2025)

The core of the Costco sheet cake's appeal is its incredible value proposition. When you compare the sheer volume of cake and the quality of the ingredients to any other major retailer or local bakery, Costco’s offering is consistently the winner, even after recent price adjustments due to inflation and ingredient costs.

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Current 2025 Price and Serving Information

The price for a custom-ordered, half-sheet cake from the Costco bakery is now set at $27.99.

• Size: Half-Sheet Cake (Dimensions vary slightly, but it is a substantial size).
• Servings: 48 suggested servings.
• Price Per Slice: Approximately $0.58 per slice (based on the $27.99 price).
• Other Options: Costco also offers a 10-inch round cake, which serves 16 people and typically costs between $16.99 and $19.99.

While the price has increased, the value remains extraordinary. For context, many local bakeries charge $3–$5 per slice for a custom cake, putting the cost of a 48-serving cake well over $150. Even major grocery store chains struggle to compete with the quality and price of Costco’s offering.

The Discontinued Full Sheet Cake: A Quick Note

Prior to the temporary discontinuation of sheet cakes during the COVID-19 pandemic, Costco offered a full-sheet cake that served 96 people for around $39.99. While the half-sheet cake has made a triumphant return and is the primary custom order option, the full-sheet cake is generally not available for custom ordering in most locations as of 2025. This means the half-sheet cake is currently the largest customizable option available from the bakery department. If you need 96 servings, the best strategy is to simply order two half-sheet cakes.

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Costco Cake Flavors, Fillings, and Customization Options

One of the reasons the Costco cake is so beloved is the quality of its construction. Unlike many single-layer competitor cakes, the Costco half-sheet cake is a two-layer dessert with a rich, premium filling.

The Two Classic Flavor Combinations

Custom-ordered sheet cakes are available in two primary flavor combinations, which are consistently praised for their moist texture and rich taste:

1. The White Cake (Vanilla): This option features a vanilla sheet cake layered with a creamy, rich Vanilla Cheesecake Mousse filling. The entire cake is frosted with a smooth, sweet white buttercream icing. This is the classic, most popular choice for birthdays and weddings.
2. The Chocolate Cake: This option features a moist chocolate sheet cake layered with a decadent Chocolate Mousse filling. The cake is covered in a chocolate buttercream icing. This is a favorite for serious chocolate enthusiasts.

The inclusion of the mousse filling—specifically the Vanilla Cheesecake Mousse—is a significant differentiator. It elevates the cake far beyond a simple sheet cake, providing a texture and flavor complexity often associated with higher-priced bakery items.

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Customization and Ordering Process

The customization process is straightforward and must be done in-person at the warehouse bakery. You cannot order custom sheet cakes online or over the phone.

• The Order Form: You will need to visit the bakery counter and fill out a physical order form, often referred to as the "slot box" method.
• Required Lead Time: Costco asks for a minimum of 24 hours’ notice for custom sheet cake orders. However, it is highly recommended to place your order 48 hours in advance, especially for weekend pickups or during major holidays, to ensure your order is completed on time.
• Decoration: While the designs are not fully bespoke, the form offers a variety of popular themes, including holiday designs, floral patterns, sports motifs, and generic celebration designs. You can also specify a custom message to be written on the cake.

The simplicity of the ordering process and the quick turnaround time are key elements of the Costco sheet cake's appeal, making it a reliable option for last-minute party planning.

Costco vs. The Competition: Price Comparison (2025)

The true measure of the Costco sheet cake's value is revealed when you compare its price and features against its main warehouse and grocery store competitors. Even with the recent price increase to $27.99, Costco maintains a dominant position in the market.

Half-Sheet Cake Price Comparison (2025 Data)

The table below compares the approximate price of a half-sheet cake (serving 48 people) at major US retailers as of 2025:

Why Costco Still Wins on Value

While Sam's Club often offers a slightly lower price point, the consensus among consumers is that the Costco cake provides a superior product. The key differences that justify the $8 difference (Costco $27.99 vs. Sam's Club $19.98) are:

• Two Layers: Costco's cake has two layers, giving it a greater height and visual impact.
• Premium Filling: The Cheesecake Mousse filling is a higher-quality, richer ingredient than the standard frosting filling used by many competitors.
• Total Cost Savings: Compared to a full-service grocery store like Walmart or Publix, the savings are massive, often saving the customer between $20 and $30 on a single cake.

The Costco half-sheet cake is not just a cheap option; it's a high-quality, high-volume dessert priced for maximum affordability. For event planners, the $27.99 price tag remains an essential tool for keeping catering costs low while still providing a crowd-pleasing dessert.