Yikes! This is a new one for me. I've been asked to make a cookie cake for 40 and I don't have a clue as to how big to make one-ANY help would be appreciated!! My thought were to use 2 rectangle (15x10) cookie sheets & set next to each other for a large sheet (these will be "covered" with frosting) but will this be enough? Would I double the cookie recipe per pan or would that be too much dough?? How do I get myself into these things??? 
And I baked them in my cake pans = didn't need any special pans.
