After refrigerating, top each mound of marshmallow fluff with another cookie, making a sandwich.
Line another cookie sheet with parchment paper.
Dip the entire cookie sandwich in the chocolate coating, using a spoon to spoon chocolate over the entire thing. Then place the cookie on the parchment lined baking sheet.
Refrigerate the chocolate covered cookies to help the chocolate set up. Then cut away any chocolate that pooled around the cookies.
Recipe adapted from Cooking Bride