Costco sheet cakes have developed something of ... fill out a "Special Cake Order Form," and note your ask to score the cake. Drop the form in the order slot and you're done.

Fortunately, the order form is simple and allows you to customize ... Design Options to Choose From Since they feed dozens, ...

If you were to set your half-sheet cake on a scale, the number would read about nine-and-a-half pounds. According to Costco's order form, two of those pounds are the cake's mousse filling.