HOW TO MAKE IT :
- Preheat oven to 350° and grease a 9×13-inch pan with cooking spray.
- Prepare the cake batter according to package directions.
- Layer the bottom of your pan with the Oreo cookies.
- Spread your cake batter over the top. Set aside.
- Meanwhile, in a large bowl, combine the cream cheese, butter, confectioners’ sugar, vanilla, and salt.
- Beat with a mixer until combined. Dollop the mixture over the cake and use a knife or skewer to create a marble swirl.
- Sprinkle chocolate chips and crumbled Oreos on top and bake for 55-60 minutes, or until the center is set.
- Serve warm with ice cream, if desired.