To make the crust, add the cookies to a food processor and pulse until finely crushed. Add the melted butter and pulse a few more times to mix.
Press the crumb mixture into a deep dish pie plate and chill in the fridge while making the filling.
To make the filling, add cream cheese and peanut butter to a medium bowl and mix with a hand mixer on medium speed until fluffy. Add powdered sugar and mix well.
In a separate bowl, beat the heavy cream with the mixer until soft peaks form. Gently fold the whipped cream into the peanut butter mixture until well combined.
Spread the peanut butter filling in the crust. Cover and refrigerate until set, about 2 hours or overnight.
Garnish with additional whipped cream, peanut butter cups, and crushed peanuts if desired.
