STIR boiling water into dry gelatin mix in large bowl at least 2 min. until completely dissolved. Add club soda; stir. Refrigerate 1-1/2 hours or until thickened (spoon drawn through leaves definite impression).
REMOVE 1 cup of the thickened gelatin; place in medium bowl. Set aside. Stir strawberries into remaining gelatin. Spoon evenly into 8 champagne glasses or dessert dishes.
BEAT reserved 1 cup gelatin with electric mixer on high speed until fluffy and about doubled in volume. Spoon over gelatin in glasses; cover. Refrigerate 3 hours or until firm. Store any leftover dessert in refrigerator.