In a food processor, pulse the Oreo cookies until finely crushed.
In a large bowl, combine the crushed Oreos, softened cream cheese, and peppermint extract. Mix until well combined and a dough-like consistency forms.
Use a cookie scoop or your hands to form small balls (about 1 inch in diameter) and place them on a lined baking sheet.
Freeze the truffle balls for about 30 minutes until firm.
While the truffles are freezing, melt the dark chocolate melting wafers in a microwave-safe bowl. Heat in 30-second intervals, stirring in between, until fully melted and smooth. If desired, stir in the coconut oil for a creamier consistency.
Once the truffles are firm, remove them from the freezer. Dip each ball into the melted chocolate, using a fork to help coat them completely. Shake off any excess chocolate.
Place the coated truffles back on the baking sheet. While the chocolate is still wet, sprinkle crushed mint Oreo cookies and a pinch of sea salt on top for garnish.
Refrigerate the truffles for about 30 minutes to set the chocolate before serving.
Notes
Arrange the truffles on a decorative plate and drizzle with additional melted chocolate for an elegant touch. Enjoy!