Updated October 16, 2026
Quick answer
“Slab cake” is what Costco Canada calls its sheet cake. In the U.S., the same cake is the half-sheet cake: $27.99, about 12 x 16 inches, serving about 48, in white with vanilla cheesecake mousse or chocolate with chocolate mousse. Costco doesn’t sell a full slab or full sheet.
$27.99
U.S. half sheet
~48
Servings
12×16″
Approx. size
No
Full slab
Slab Cake vs. Sheet Cake
| U.S. | Canada | |
|---|---|---|
| Name | Half-sheet cake | Half slab cake |
| Serves | ~48 | ~48 |
| Price | $27.99 | Check your local warehouse (CAD) |
Full details on size, flavors and ordering: Costco sheet cake guide.
Costco Slab Cake FAQ
What is a Costco slab cake?
The Canadian name for Costco’s sheet cake.
How much is a Costco slab cake?
In the U.S., the half sheet is $27.99.
How many does a slab cake serve?
About 48.
Related: Sheet cake · All prices · Costco UK
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