Set oven control to broil. On ungreased cookie sheet, place 12 graham cracker squares. Top each with 1 candy bar half and 2 marshmallows. Broil 45 to 60 seconds or until marshmallows are toasted and chocolate is softened. Press 4 licorice pieces into 2 opposite sides of each soft marshmallow.
Top each with second graham cracker square; press together and hold a few seconds to melt chocolate. Add 2 candies to each s’more for eyes. Serve immediately.