Take the chilled brownie balls out of the freezer.
Drop one ball into the melted chocolate, coat it fully, then lift it out with a fork.
Gently tap or shake the fork to let extra chocolate drip off the bottom.
Set the coated truffle back on the parchment-lined sheet.
While the chocolate is still wet, add toppings:
Sprinkle some finely ground pecans.
Press on 2–3 red and green chocolate candies.
Or use sprinkles or other nuts to make them festive.