Microwave the chocolate in a bowl for 1 minutes on medium-high. Stir, and if the has not completely melted, keep microwaving for 30 second intervals. Stir until smooth.

To Assemble the Pies:

Place the cookies on a baking sheet covered with waxed paper, leaving about 2 inches between the cookies. Spread a ¼ inch-thick layer of ganache on top of each cookie and refrigerate about 10 minutes, until set. Spread a layer of marshmallow filling(about 2 TBSP) over the ganache, it will flow over the edges of the cookie. Spoon about 2 to 3 TBSP of the melted chocolate to cover each cookie completely. Refrigerate the cookie about 10 minutes, until the chocolate layer has hardened. Store in an airtight container with waxed paper between each layer.