Start by placing your room-temperature cream cheese into a large mixing bowl along with the chunky peanut butter. Beat these together on medium speed until smooth and creamy.

Add powdered sugar and vanilla extract to the mixture, mixing on low speed until blended into a smooth filling.

In a separate bowl, whip the heavy cream until it forms stiff peaks.

Gently fold the whipped cream into the peanut butter mixture using a rubber spatula.

Fold in the Reese's Pieces and chopped mini peanut butter cups until evenly distributed.

Spoon the filling into the prepared pie crust, smoothing the top.

Sprinkle extra Reese's Pieces and chopped mini cups on top as garnish.

Cover the pie and freeze for at least 3 hours, or overnight for best texture.

Allow the pie to sit for 5 to 10 minutes after removing from the freezer before slicing with a warm knife.

Drizzle chocolate sauce over each slice right before serving.