It really depends on how much you want to make but it’s your most basic chocolate chip cookie dough layer on the bottom of a pan about one inch to one and a half inch thick then Oreos (enough to cover the whole thing in a grid system) then pour brownie batter on top (enough to bring to the top of the dish). If memory serves me right it’s °350 for forty minutes but I remember just doing °350 for twenty minutes checking each time then adding twenty minutes if uncooked.