*Unlike when you make Jello and have to add cold water, as well… We only add boiling water when making Jigglers. This ensures a very firm set to our Jello.How do I keep Jello from sticking to the pan?Spray your pan with the cooking spray of your choice.How can I tell when Jello is set and ready to cut?Jello takes 2 to 4 hours to set up in the refrigerator. When it's firm and doesn't stick to your fingers, it's ready to cut.Can I use silicone molds for Jigglers? Do I have to use cookie cutters?Yes, you can use silicone molds, but they will need to be sprayed with cooking spray to keep the jello from sticking to the mold.How should I store leftover Jello Jigglers?Store jello in the refrigerator in an airtight container or storage bag. Jello can be kept in the refrigerator for 7 to 10 days.Can I freeze Jello Jigglers?Freezing jello is not recommended. Jello loses its texture when frozen and doesn't really harden in the freezer due to the gelatin.