Add the gelatin mix to a large heatproof bowl. Whisk in the boiling water until the gelatin is completely dissolved.
Whisk in the cold water, caramel vodka, and sour apple pucker.
Arrange twelve 2-ounce plastic cups on a baking sheet. Pour the jello mixture into the cups, filling each about 3/4 full. Pro Tip: Transfer the jello mixture into a spouted measuring cup to make pouring easier.
Refrigerate the jello shots for 3-4 hours or until set.
When you're ready to serve, remove from the fridge and top with a dollop of whipped cream and/or some caramel sauce if desired. Serve immediately.
Notes
Nutritional information is for jello shots only, without any topping.