Line baking sheets with parchment paper and set aside.
In a heatproof bowl, set over (but not touching) simmering water, melt chocolate wafers. Stir with a slotted spoon. Dip each cracker into melted wafers, using tweezers or your fingers, until fully coated. Transfer to prepared baking sheets.
Let stand until coating has set and is no longer glossy, 20 to 30 minutes.
Tip: Dark Cocoa Mint-flavored Melting Wafers can be purchased at wilton.com or your local baking/craft specialty store.