Prepare the Filling: In a mixing bowl, beat peanut butter, cream cheese, powdered sugar, and vanilla until smooth.
Fold in Whipped Topping: Gently fold in the whipped topping until light and fluffy.
Layer the Cake:
Arrange a layer of graham crackers at the bottom of a square or rectangular dish.
Spread a layer of the peanut butter mixture over the crackers.
Repeat layers until the dish is filled, finishing with the creamy peanut butter layer on top.
Chill: Cover and refrigerate for at least 4 hours (overnight for best results).
Garnish & Serve: Before serving, drizzle with chocolate syrup and sprinkle with crushed peanuts if desired.
Serving and Storage Tips
