Cover the bottom of your soap mold with dried cranberries.
Add shea butter soap base to a microwaveable bowl. Microwave on high for 30 seconds, and then stir. Microwave an additional 10 seconds and stir. Continue to microwave in 10-second increments, stirring in between, until the soap is completely melted.
Stir in vanilla soap fragrance.
Pour into soap mold. Let sit at room temperature until set (about 40 minutes to 1 hour).
Carefully remove from soap mold by pushing on the bottom to release the soap.