In a mixing bowl, combine 1 cup of creamy peanut butter and 1 cup of powdered sugar. Mix until smooth and well blended.
In a separate bowl, whip 1 cup of heavy cream and 1 teaspoon of vanilla extract until soft peaks form.
Gently fold the whipped cream into the peanut butter mixture until fully combined, creating a light and airy filling.
Pour the peanut butter filling into the pre-made chocolate cookie crust, spreading it evenly. Place the pie in the refrigerator to chill for about 10 minutes.
In a small saucepan over low heat, melt 1 cup of semi-sweet chocolate chips and 2 tablespoons of unsalted butter, stirring until smooth.
Once melted, remove from heat and let it cool slightly. Drizzle the chocolate over the chilled peanut butter filling in a decorative pattern.
For extra flair, top with additional whipped cream if desired.
Chill the pie in the refrigerator for at least 2 hours before serving for the best texture.