01 - Line a 8x12 inch baking sheet with parchment paper.
02 - Melt dark chocolate in a heatproof bowl over simmering water or microwave in 30-second intervals, stirring until smooth.
03 - Stir ½ teaspoon peppermint extract into melted dark chocolate.
04 - Pour dark chocolate onto lined baking sheet and spread evenly to approximately 0.2 inch thickness.
05 - Refrigerate the baking sheet for 15 minutes to set the dark chocolate layer.
06 - In a clean bowl, melt white chocolate using the same method as dark chocolate.
07 - Incorporate the remaining ½ teaspoon peppermint extract into melted white chocolate.
08 - Pour white chocolate over chilled dark chocolate and spread gently to cover completely.
09 - Immediately sprinkle crushed peppermint candies evenly over the white chocolate layer.
10 - Refrigerate for at least 1 hour until the chocolate layers are fully set.
11 - Break the set chocolate bark into 16 pieces and store in an airtight container.