Preheat the oven to 350 degrees Fahrenheit.
Place the pretzels in the food processor and blend until crumbs form.
Add the melted butter and the granulated sugar and process again until combined.
Spray a pie pan with nonstick spray. Then pour the mixture into the pie pan and press into the bottom and sides of the pan. Bake for 12-15 minutes until set. Allow to cool to room temperature.
Add the peanut butter, cream cheese, and powdered sugar into the bowl of a stand mixer and beat together using the paddle attachment (or electric hand mixer) until smooth.
Add about ½ cup of the cool whip into the bowl with the peanut butter mixture and beat until combined.
Add in the rest of the cool whip and fold the cream into the peanut butter mixture gently by hand, until fully incorporated.
Mix in the mini chocolate chips by hand until evenly distributed. Then pour the mixture into the pie crust. Allow the pie to chill for at least 4 hours.
Once cooled, decorate with miniature Reese's cups, chocolate sauce and whipped cream if desired. Cut and serve, and enjoy!