Line a cookie sheet with wax paper.
Process Oreos in food processor until crushed into larger pieces. Make sure to not grind it too fine - you want some large chunks in there!
Melt chocolate by microwaving 45 seconds and stirring and repeating until melted and smooth.
Pour on to prepared cookie sheet and smooth in to an even layer.
Sprinkle the crushed Oreos over the chocolate.
Place in refrigerator for 15 minutes to set.
Crush mints (or candy canes) in a food processor until crushed (you also want to leave some chunks).
Melt white chocolate chips by microwaving 45 seconds and stirring and repeating until melted and smooth.
Pour over cooled dark chocolate and Oreos.
Sprinkle the peppermint over the white chocolate layer.
Place in refrigerator for at least 30 minutes to set.
Break into pieces before serving.