Melt chocolate wafers in microwave-safe bowl for 30 seconds. Stir. Continue to microwave in 15-second intervals until chocolate chips are melted and smooth. BE CAREFUL TO NOT overheat the chocolate.
Add a tablespoon of chocolate into 6 chocolate molds. Smooth chocolate up the sides of each mold with a spoon. Add more chocolate as necessary to coat the inside of each mold. Ensure that the sides and center of the mold are evenly coated with chocolate.
Freeze for about 7 minutes and gently remove chocolate from mold
Fill 3 halves with 1 tablespoon of cocoa mix and 1 tablespoon of marshmallows.
You will need a hot bowl or plate. Press one of the empty chocolate cups for a few seconds against the hot plate to melt the rim.
Place the empty chocolate cup over one of the filled ones.
Run a hot spoon carefully along the seam to melt the chocolate and seal the seam.
Decorate with additional melted chocolate wafers, or sprinkles if desired!