All you need is a box each of Betty Crocker's brownie mix and cookie mix, plus two packs of Oreos and the eggs and oil you need for the Betty Crocker mixes.
Start of by preparing a baking dish with some greaseproof paper. Next make up the cooking mix according to the pack instructions and add to the bottom of the dish.
Follow by pressing Oreos into the cookie dough in a fairly even layer.
Next make up the brownie mix and pour over the Oreos covering the bottom layers.
And that's it! Bake it in the over for 25 - 30 minutes until it's all gooey and lovely and amazing. Serve with proper vanilla ice cream and a big spoon.
Heaven in a bowl. Enjoy :)