Pour boiling water over dry jelly powder in large bowl; stir 2 min. until completely dissolved. Add enough ice cubes to apple juice to measure 1-3/4 cups. Add to jelly along with the lemon peel; stir until slightly thickened. Refrigerate 5 to 10 min. if jelly requires more thickening. Stir in whipped topping with wire whisk until well blended.