I'm a complete newbie in the kitchen and I am just wondering if there's anything special I should know about baking very massive cookies. My friend's birthday is coming up in a couple weeks and I know he's not really really fond of cake for a rather humorous reason, but I decided I would try and surprise him and make a cookie cake to celebrate his special day because I know he won't object to cookies. What I plan on doing - to fit my budget - is to get some pre-made cookie dough from Wal-Fart, a baking sheet, canned cake icing (preferably the sickeningly sweet kind - brand names, anyone?), and the other kind of canned icing that comes with nozzles for decorating.
I'm not sure how much the dough is going to expand because I've never made chocolate chip cookies before, and I also don't know how much longer to bake this huge cookie as opposed to how much baking time normal cookies would need. Also, would I let this monstrous cookie cool on the sheet or would I have to try and dig it off and transfer it to a cooling rack?