This is a really easy dessert to make. If you love peanut butter you will love this! It is super rich and sure to please a crowd. I still have people talking about this dessert since the last time I made it. I hope y'all enjoy it too!
Spray the bottom of a 9x13 pan with cooking spray. Line the bottom of the pan with whole graham crackers.
In a large bowl, use an electric mixer to mix pudding with milk and peanut butter; beat at medium speed for 2 minutes.
Fold in whipped topping
Pour half the pudding mixture over the graham crackers. Place another layer of whole graham crackers on top of pudding layer. Pour over remaining half of pudding mixture and cover with another layer of graham crackers.
Heat the container of prepared frosting, uncovered in the microwave for about 1 minute. Pour over the top of the cake. Refrigerate and let it set up for at least 12 hours before serving.