Low-Carb Pie

2/3 cup boiling water
1 (4 serving size) package any-flavor sugar-free gelatin dessert
1/2 cup cold water
ice cubes
8-ounce tub whipped topping, thawed

Stir boiling water into gelatin for at least 2 minutes. Add enough ice to cold water to make 1-1/4 cups. Stir into gelatin mixture until thickened. Discard any remaining ice. Stir in whipped topping with wire whisk until smooth. Pour into glass pie plate. Refrigerate until firm, about 6 hours. If desired, garnish with additional whipped topping.

Note: To add more flavor, use diet soda, in complementary flavors, instead of cold water. Also adding a teaspoon of extract adds few carbs and more flavor.