3 (8-ounce) cartons lowfat sugar-free yogurt, your favorite flavor
1 (8-ounce) container fat-free non-dairy whipped topping
1 reduced-fat graham cracker crust
In a bowl, combine yogurt and whipped topping, stirring gently until well-blended. Pour filling into pie crust and place in freezer for at least 2 hours before serving. Store leftovers in freezer. If desired, let sit at room temperature for 15 minutes before slicing.