Combine first 3 ingredients in a small pot and heat over low to medium heat until very warm. TASTE IT. You can add more cinnamon oil or more sweetener (add stevia if you'd like). Tailor it to your taste buds.
Slowly whisk in the gelatin until dissolved. At this point I pour it through a mesh sieve to strain out any pieces of gelatin that didn't dissolve. Pour into silicone molds and refrigerate until firm.