How many servings will you get from a double layered 12" x 18" x 2" 1/2 sheet cake? I'm only finding information about single layers, but wondered if you just double the number...or if it's more because the actual pieces are cut smaller. I'm putting 2 layer numbers on top (7 & 5 in number pans) and was also trying to figure out the servings of those (the plastic number pans). Any insight would be really appreciated!
Thanks!
Here is a copy of the chart I use, it has sheet cakes at the bottom...
I use Indydebi's chart as a guide for the sheet cakes too. I use them to make carved cakes, so it's a little different, but her servings are true.
I love the chart! Thanks for sharing it! I really like the way it's laid out and really helpful. I was figuring some sizes on cakes yesterday and I was happy that my serving numbers matched what yours were. I can still do a little math! 
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