In a food processor, pulse the Nutter Butter bars until they turn into fine crumbs.
Set aside ½ cup of the cookie crumbs.
Transfer the remaining cookie crumbs into a medium mixing bowl.
Add melted butter to the cookie crumbs and mix until well blended.
Apply cooking spray to a 9-inch pie pan.
Press the cookie mixture evenly onto the sides and bottom of the prepared pan to form the crust.
In a large mixing bowl, combine cream cheese, 1 cup of peanut butter, and granulated sugar. Use an electric mixer to beat the mixture until well blended.
Add the frozen whipped cream (or whipped cream) to the mixture and beat until just blended.
Transfer the filling into the pie crust and spread it evenly.
Add a layer of whipped cream over the filling and spread it evenly as well.
Microwave the remaining peanut butter until melted and pour it over the pie, spreading it evenly.
Garnish with dollops of whipped topping and the reserved cookie crumbs.
Place the pie in the fridge to chill for approximately 6 hours.
Serve the Nutter Butter Pie cold and savor the irresistible flavors!