Basic Apple Cider Jell-O 
1 envelope Knox unflavored gelatin
1/2 cup water 
1 cup hard apple cider, divided in half
1/4 cup Apple Pucker or other sour apple schnapps

Combine the water with ½ cup cider in a saucepan. Sprinkle the gelatin over it and let sit for a few minutes. Heat over low heat, stirring, until the gelatin starts to dissolve. Cool till just warm. Stir in the remaining cider and the apple schnapps. Pour into cups and chill. Top with caramel ice cream topping if desired.