In a large bowl, whisk together the pudding mix and milk for two minutes, until pudding mix is dissolved.
2 3.4 ounce boxes vanilla instant pudding mix, 3 ½ cups cold milk
Using a spatula, gently fold in the cool whip until well blended.
8 ounces Cool Whip, thawed
Place a single layer of the graham crackers on the bottom of 13x9 baking dish.
1 14 ounce package graham crackers (honey)
Evenly spread half of the pudding mixture over the graham crackers.
Repeat layering the graham crackers and spread the other half of the pudding mixture onto the graham crackers.
Top with another layer of graham crackers.
Spread chocolate frosting evenly on the top layer of graham crackers.
1 16 ounce container chocolate frosting
Chill cake overnight (or 8 hours) until it is set before serving.
Serve chilled.
Store any remaining cake in the refrigerator.