preheat oven to 350°

grease a 9x9 cake pan sides and bottom

put cookie dough on bottom with no gaps in the dough

line oreos on top of cookie dough in a fill pattern until package is gone, do not stack oreos just crumble them up

prepare brownie mix

put brownie mix on top of oreos

put in the oven for about 20 mins

check with a toothpick to ensure its done

cut and serve