In a medium, microwave safe bowl, melt chocolate in 30 second intervals, stirring between each interval.
Once chocolate is completely melted, stir in peppermint oil.
Dip Oreo cookies into the chocolate one at a time and place to dry on a piece of wax or parchment paper.
Sprinkle still wet Oreos with crushed candy cane pieces.
Allow to dry for 30 minutes to 1 hour. Enjoy!