1 pkg. strawberry-banana Jello
3/4 c. boiling water
1/2 c. cold water
Ice cubes
1 banana, sliced

Dissolve gelatin in boiling water. Combine cold water and ice cubes; add to gelatin. Stir. Remove unmelted ice. Place bananas in dessert glasses. Spoon in mixture. Whip part of gelatin until fluffy. Pour into glasses. Chill. Top with Cool Whip.