In a small food processor, crush the peppermint candy and set aside.
Mix the marshmallows and milk in a medium saucepan (preferably with a heavy bottom) over low heat.
Stir continuously until marshmallows are melted and the mixture is smooth
Remove from heat.
Add in the vanilla extract, salt, peppermint extract and food coloring.
Stir it all together until pink
Cool the pie filling for at least 30 minutes, stirring several times. (You could set your phone timer for 5 minutes and then stir, and keep repeating until the 30 minutes are up)
While the pie filling has cooled add half of the Cool Whip
Stir in 2 tablespoons crushed candies
Spoon the candy cane pie filling into the oreo cookie pie crust.
Refrigerate, covered, 8 hours or overnight.
Top with the remaining Cool Whip
Sprinkle with remaining peppermint candy just before you serve..