1 pkg. strawberry jello
1 c. boiling water
3/4 c. cold water
1 (8 oz.) carton yogurt

Dissolve jello in hot water. Add cold water; chill until it thickens. Add yogurt and beat until light and fluffy. Chill 2 hours; top with Cool Whip.

I often add 1 cup strawberries to the salad and mix the Cool Whip into the salad.