Preheat your oven to 350°F (175°C) and coat a pie pan with non-stick spray. In a food processor, crush 30 Oreos until they resemble fine crumbs. Mix the crushed Oreos with 5 tablespoons of melted butter until thoroughly combined, then press this mixture tightly into the bottom and sides of your pie pan. Bake for 8-10 minutes until slightly set and fragrant, then transfer to a wire rack to cool completely.

In a large mixing bowl, beat 8 oz of softened cream cheese and 1 cup of creamy peanut butter using an electric mixer until the mixture is smooth and creamy, about 2-3 minutes. Gradually add ¾ cup powdered sugar, mixing until fully integrated and no lumps remain. Finally, gently fold in 8 oz of Cool Whip until the filling is light and fluffy, ensuring there are no streaks.

Once your Oreo crust has completely cooled, pour the luscious peanut butter filling into the crust. Use a spatula to spread the filling evenly, ensuring every corner is filled. For a personalized touch, sprinkle your choice of toppings, such as chopped Reese's cups or crushed Oreos, over the filling.

Place the assembled Peanut Butter Pie in the refrigerator and allow it to chill for at least 3 hours or until set. If you prefer a firmer texture, you can freeze the pie for about 1-2 hours before serving. Once chilled, the pie should be firm yet creamy, ready to delight your guests!