01 - Line a baking sheet with parchment paper or a silicone baking mat.
02 - Melt dark chocolate in a microwave-safe bowl in 20-second intervals, stirring between each burst until smooth. Stir in 1/4 teaspoon peppermint extract.
03 - Pour the melted dark chocolate onto the prepared baking sheet and spread into an 8 x 10-inch rectangle. Refrigerate for 15 to 20 minutes until set.
04 - Melt white chocolate using the same microwave method. Stir in the remaining 1/4 teaspoon peppermint extract.
05 - Pour melted white chocolate over the chilled dark chocolate and gently spread to cover evenly.
06 - Immediately sprinkle crushed peppermint candies evenly over the white chocolate, pressing lightly to ensure adhesion.
07 - Refrigerate for 30 minutes or until fully firm.
08 - Break or cut into 16 pieces. Store in an airtight container at room temperature in a cool, dry place for up to two weeks.