Preheat oven to 350 degrees F. Cream the butter and both sugars in a large bowl with an electric mixer on medium speed for 3-5 minutes. Add the eggs and vanilla and mix well to thoroughly combine. In a separate bowl, whisk together the flour, baking soda and salt, then slowly incorporate into the mixer until the flour is just combined. Stir in chocolate chips. Spread the cookie dough in the bottom of a 9×13 baking dish that’s been lined with wax paper and sprayed with cooking spray. Top with a layer of Oreos. Mix together brownie mix, adding an optional 1/4 cup of hot fudge topping to the mix. Pour the brownie batter over the cookie dough and Oreos. Cover with foil and bake at 350 degrees F for 30 minutes. Remove foil and continue baking for an additional 15-25 minutes. Brownies are down when a toothpick inserted 2? from the edge comes out clean or with moist pieces clinging to it. Let cool completely before cutting.

To half this recipe for an 8×8 brownie mix, simply half the chocolate chip cookie dough ingredients. Enjoy!