Chop the melt and pour soap base into small pieces, about half an inch square, or smaller.
Melt in a double boiler, over medium heat, stirring frequently.
Once the soap is fully melted, remove it from the heat. Allow it to sit for a few minutes to slightly cool before adding the essential oils. If you have a candy thermometer, you can use it to keep an eye on the temperature - when the temperature of the melted soap base dips below 140° F, you're ready to add the oils. If you don't have a candy thermometer, don't sweat it. Let your soap base sit for about 5 minutes after you remove it from the heat, and it'll be fine.
Add the cinnamon and essential oils to the soap base. Stir well until thoroughly mixed.
Pour soap mix into the cavities of the gingerbread people mold. I find it works best to just very slightly under-fill each cavity.
Allow to cool at room temperature until fully hardened - about one hour. If you'd like to speed things up, you can also cool your soaps in the fridge. They'll be ready to release in about 20 minutes.
Once the soaps are fully cool and hard, carefully pop them out of the mold one at a time.
Store in a cool, dry place, out of direct sunlight, until you're ready to use them.