Place white chocolate chips in a large microwavable bowl.

Microwave on HIGH for 1 1/2 to 2 minutes, or until almost melted.

Add peppermint extract.

Stir until mixture is smooth.

Line a large baking sheet with foil.

Spread the chocolate mixture on the prepared baking sheet to 1/4-inch thickness.

Add red (or green) food coloring, drop by drop, over the chocolate mixture.

Using a wooden skewer, swirl the food coloring through the bark.

Sprinkle with crushed peppermint candies (or candy cane).

Press the crushed candies lightly into the bark using a spatula.

Place the baking sheet in the refrigerator.

Chill for 10 minutes, or until set.

To serve, break the bark into individual irregular pieces.

Store in a covered container at cool room temperature.