01 - 
                In a large mixing bowl, combine the instant vanilla pudding mix and cold milk. Whisk until the mixture thickens.
              
              
              
                02 - 
                Gently fold in the whipped topping until well combined. Set aside.
              
              
              
                03 - 
                In a saucepan, melt the chocolate chips and butter over low heat. Stir until smooth and remove from heat.
              
              
              
                04 - 
                Add the vanilla extract and powdered sugar to the chocolate mixture. Stir until well combined.
              
              
              
                05 - 
                Line the bottom of a 9x13-inch baking dish with a single layer of graham crackers.
              
              
              
                06 - 
                Spread half of the pudding mixture over the graham crackers.
              
              
              
                07 - 
                Place another layer of graham crackers on top of the pudding mixture.
              
              
              
                08 - 
                Spread the remaining pudding mixture over the graham crackers.
              
              
              
                09 - 
                Add a final layer of graham crackers on top of the pudding mixture.
              
              
              
                10 - 
                Pour the chocolate mixture evenly over the top layer of graham crackers.
              
              
              
                11 - 
                Refrigerate the cake for at least 4 hours, or overnight, to allow it to set.
              
              
              
                12 - 
                Serve chilled and enjoy!