3 oz. cream cheese, softened
1/2 c. smooth peanut butter
1 c. powdered sugar
1/2 c. milk
8 oz. Cool Whip
1 prebaked graham cracker pie crust

In a large bowl with an electric mixer, combine cream cheese, peanut butter, sugar and milk. Beat until smooth. Gently fold in whipped topping. Pour into pie shell. Freeze 4 to 6 hours. Thaw 10 minutes before serving.