Peanut Butter Pie

1 (8 ounce) package cream cheese, softened
1 ¾ cup powdered sugar
1 cup peanut butter
4 tablespoons milk
2 cups non-dairy whipped topping
1 graham cracker crust, ready made

Cream together cream cheese and sugar.  Add peanut butter and milk, beat until smooth.  Fold in whipped topping.  Pour into graham cracker crust.