In a high powered blender or food processor (I used my Vitamix), combine the peanut butter, dates, coconut flour, and 2 tablespoons of water.
Using a fork or dipping tool (I use the round one from this set *link*) to dip each ball in the melted chocolate, letting the excess drip off before placing on a parchment-lined plate or baking sheet. Sprinkle with flaky sea salt, if desired, while the chocolate is still melted. Repeat until they’re all dipped and then transfer to the refrigerator to let set. You'll probably have extra chocolate.
Recipe adapted from these Chocolate Peanut Butter Truffle Bars!