Beat 1 (8 oz.) package cream cheese, softened, with 1/4 cup sugar and 2 tablespoons milk until smooth. Fold in 1 1/2 cup Cool Whip. Spread over crust. Prepare 2 (4 serving) packages chocolate flavor instant pudding and pie filling as directed on package, using 3 1/2 cup milk. Pour over cream cheese layer. Chill several hours or overnight. Spread 1 1/2 cup Cool Whip over pudding. Makes 15 servings.