In a bowl, combine cream cheese, 1 cup of peanut butter, and powdered sugar. Beat/whip until smooth using an electric mixer.
Fold in the whipped topping.
Pour the mixture into the graham cracker crust, and chill until firm (at least 4 hours or overnight).
Decorate with chopped peanut butter cups, and a drizzle of melted peanut butter.
Notes
To Store: Refrigerate the pie, covered, in the refrigerator for up to 3 days.
To Freeze: Freeze peanut butter pie and then enjoy it as a frozen pie instead! The texture will change if you allow it to thaw.
Instead of peanut butter cups and drizzled peanut butter, try a drizzle of fudge sauce or a sprinkle of mini chocolate chips.
A pre-made Oreo cookie crust is delicious with this pie if you find that instead of the chocolate graham type. You can also use a homemade graham cracker crust if you prefer.