Line a small baking sheet with unbleached parchment paper.
Put the dates, raisins, coconut and maple syrup in a high-performance blending appliance and process to the consistency of soft dough. Transfer the date mixture to a medium-sized bowl.
Using a cookie scoop, spoon out a heaping tablespoon of the date mixture, and roll it into a ball. Continue in this manner to form 10 to 12 truffle balls.
Put the cocoa powder in a small bowl. Roll the truffles in the cocoa powder until coated and place on the prepared baking sheet. Refrigerate 1 hour. Stored in an airtight container in the refrigerator, truffles will keep up to 3 days.