2 (3 oz) packages Orange Jello
1 cup water
1 (8 oz) container Fat Free Cool-Whip
1 pint orange sherbet
Boil water and remove from heat. Add the 2 packages of orange jello and stir until dissolved. Set jello aside and let it cool for a couple of minutes.
In a separate bowl, mix together Cool Whip and orange sherbet.
Add Jello to Cool Whip mixture and mix thoroughly until well combined (I used an 8x11 baking dish).
Refrigerate for about 4 hours to set. Top individual servings with whipped cream and mandarin oranges.