Place chocolate in a microwave-safe medium bowl. Melt chocolate in the microwave on medium-high for in 30-second increments, stirring between each. Once chocolate is melted, stir in ground coffee, caramel, and coconut oil.
Carefully spoon into small candy molds. Tap mold on a solid surface like a counter top a few times to release the air bubbles from the truffles. Place in fridge until solid and firmed.
If you don't have a candy mold, these may be done with a scoop or a spoon. Scoop or spoon out a small amount and place the truffle onto a Silpat or a parchment paper lined cookie sheet.
Drizzle a small amount of salted caramel sauce over each truffle for serving, if desired. You could even sprinkle some salt over the top for serving.