Oreos are being stuffed in everything right now. Actually, everything is being stuffed. I think the thought process is, "I usually make this but how can I make it
worse for me taste better"
So, typical brownie mix. I always use Ghirdelli brownie mix from Costco. To make them extra good, just make sure you always under cook slightly so they are still gooey.
I poured down part of the brownie mix in an 11x9 pan and then added a layer of oreos and then poured the rest of the mix. They did have to cook longer than normal but they were delicious.