Costco wedding cakes are limited to Half Sheet Cakes so if you are looking for a cake orders can be placed in the bakery department using their order forms.
Costco sheet cakes are popular for custom orders for any number of Simply fill out the Costco cake order form, which will provide you will all of your options.
Thanks to the ever helpful AZ Cake Decorator, I've got an updated version of the Costco US Cake Order Form. While there are far, far fewer.
The: Costco sheet cake order form
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