Prepare your pie crust by placing a store-bought crust in a pie dish, or bake a homemade crust according to recipe instructions and cool completely.

In a large mixing bowl, combine 1 cup of peanut butter with 1 package of instant vanilla pudding mix and 2 cups of milk. Whisk until smooth, about 2-3 minutes.

Gently fold in 2 cups of fresh whipped cream into the peanut butter mixture until fully incorporated.

Spoon half of the peanut butter filling into the prepared pie crust, spreading it evenly.

In a separate bowl, combine the remaining peanut butter with 1/4 cup of powdered sugar to create crumble nuggets. Sprinkle half over the first layer of filling.

Add the remaining peanut butter filling on top, smoothing it evenly, and then sprinkle the rest of the crumble on top.

Cover the pie and refrigerate for at least 2 hours to allow the filling to set properly.