01 -
Preheat oven to 350°F (175°C). Crush half of the Oreo cookies and spread them evenly in a greased 9x13 inch baking dish.
02 -
In a bowl, combine the chocolate cake mix, melted butter, and milk until just mixed. Pour over the crushed Oreos.
03 -
Crush the remaining Oreos and sprinkle them on top of the cake batter. Add chocolate chips if desired.
04 -
Bake for 30-35 minutes until set. Let cool slightly before serving.