Place plastic cups on a cookie sheet. Add 2 cups of water to a medium saucepan and bring to a boil.
3 cups water
Whisk the packet of Cherry Jello into the hot water and stir until the gelatin powder is dissolved.
1 box Cherry Jello
Add 1 cup cold water and 1 cup Fireball whisky and stir again.
3 cups water, 1 cup Fireball Whisky
Pour the Jello mixture evenly into the plastic shot glasses or shot cups. Move to the refrigerator to chill for at least 4 hours or until the Jello is set.
Before serving, use a knife to remove a bit of the Jello from the center of each cup. Place a maraschino cherry in the middle. Enjoy!
Notes
If you can't find Cherry Jello, any red Jello mix will work.
It's tempting but don't overdo it on the alcohol. If you add too much, the Jello won't set.