Crush OREO’s in a zip top bag with a rolling pin. Add melted butter into the bag and mix until combined. Press OREO mixture into the bottom of the dish and place in the refrigerator for 5 minutes.
In a medium sized bowl whip the cream cheese until fluffy. Add in 2 Tablespoons of milk and sugar. Mix until combined. Stir in 1 cup Cool Whip, then spread the mixture lightly over the crust. Place in the fridge for another 5 minutes.
In a separate bowl combine the chocolate pudding and cold milk. Whisk together until thick. Then spread over the top of the cream cheese layer. Place back in the fridge for another 5-10 minutes to allow pudding to set.
Once pudding has set spread remaining Cool Whip on the chocolate layer and then top with chocolate chips. Place in the fridge for 3-4 hours before serving.