Prep: Place the plastic shot cups in a pan or baking dish so that they are easy to transfer to and from the refrigerator. Also, clear a shelf in your fridge to place the shots.
Purple layer: In a large bowl, combine the purple jello mix and 1 cup of boiling water. Whisk for 2 minutes, or until the jello is fully dissolved. Whisk in ½ cup of cold water and ½ cup of vodka. Carefully pour the jello mixture into the plastic cups, filling them each just less than halfway. Chill in the refrigerator until the jello has set, about 45 minutes
Orange layer: In a large bowl, combine the orange jello mix and 1 cup of boiling water. Whisk for 2 minutes, or until the jello is fully dissolved. Whisk in ½ cup of cold water and ½ cup of vodka. Carefully pour on top of the purple layer. Chill in the refrigerator for 2 hours, or until fully set (overnight works too).
Serve: Before serving top with whipped cream and Halloween sprinkles.
Notes
Store covered in the refrigerator for up to 3 days. Wait until just before serving to add whipped cream and sprinkles.