Make a batch of cookie dough like normal. I followed the recipe on the back of the Ghiradelli chocolate chip bag.Spread the cookie dough onto the bottom of a 13 x 9 inch pan lined with parchment paper. PARCHMENT paper – not wax. Let me remind you about me nearly burning the house down by putting wax paper in the oven. Definitely a no-no. Add oreos, Pour the brownie mix ON TOP OF the cookie dough. Are you with me so far?Bake in the oven at 350 degrees for 40–45 minutes.