I don't know if anyone else has this issue, but I am going to be making my first square cake. My question is how much cake mix am I going to need to fill a 16x16x2 pan. I can't find any of the info that came with my pan so I am at a loss. I am use to making standard cakes nothing this size. If someone could help me out I would appreicate it. Thanks in Advance
Hi and Congrats on your 1st post, hogue. 
Wilton's cake preparation and servings charts for 2" pans:
http://www.wilton.com/cakes/making-cakes/baking-party-cake-2-inch-pans.cfm
The 16" square requires 15-1/2 cups of batter, so I'd say three DH cake mixes should do it.
Link to DH's tiered or large layer cake mix preparation charts:
http://www.duncanhines.com/newDuncan/pub/faq/
HTH
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