My son doesn't like cake, so I'm thinking about suggesting a chocolate chip cookie cake to him for the party. I've never made one and I plan on keeping it in the pan for the party, so my question is this: Do I put the dough all the way to the edge of the pan, or allow for spreading? If so, how much room should I leave?

Thank you!!

I'd push the dough to the edges of the pan.

Push to the edges but make it slightly thicker in the center so when it wants to spread out more evenly.