Once you take a look at Costco's adorable designs and cut yourself a slice, you won't want to order a birthday cake from ...

Read more: 30 Types Of Cake, Explained Should you have a specific design in mind that isn't listed on Costco's order form, ...

But before you head to your closest warehouse, here are 10 things you should know about their custom cake ... According to Costco's order form, two of those pounds are the cake's mousse filling.

But before you head to your closest warehouse, here are 10 things you should know about their custom cake department ... the number would read about nine-and-a-half pounds. According to Costco's order ...