1 (4 serving size) pkg. Jello sugar free gelatin, any flavor
1 c. boiling water
1/2 c. cold water
1 (8 oz.) container plain low fat yogurt
2 c. thawed Cool Whip whipped topping

Dissolve gelatin in boiling water, add cold water. Stir in yogurt until well blended and smooth. Fold in whipped topping. Pour into 9-inch square pan. Freeze until firm, about 6 hours or overnight. Scoop into individual dessert dishes. Makes 7 half cup servings. Preparation time: 10 minutes. Freezing time: 6 hours. About 80 calories per serving.