Prepare Tray: Line a medium baking tray or plate with parchment paper and set aside.
Melt Chocolate: Prepare a double boiler by placing a heatproof bowl over a saucepan of gently simmering water. Add the chocolate and stir occasionally until completely melted and smooth.
Chop Mint: While the chocolate is melting, finely chop the fresh mint leaves and set aside.
Add Mint: Remove the bowl from the heat. Add half of the chopped mint leaves and stir until evenly distributed throughout the melted chocolate.
Spread Chocolate: Pour the chocolate onto the prepared tray. Using an offset spatula or the back of a spoon, spread it into an even layer approximately 3–5mm thick.
Add Remaining Mint: Sprinkle the remaining chopped mint leaves evenly over the top of the chocolate.
Chill: Transfer to the refrigerator and chill for 30–60 minutes or until completely firm.
Cut & Serve: Remove from the refrigerator and allow the bark to sit at room temperature for 5 minutes. This helps prevent it from shattering into very small pieces when cut. Break or cut into shards, then serve and enjoy.
Notes
Store: Keep chocolate bark in an airtight container in the refrigerator for up to 10 days.Freeze: Store in a freezer-safe container with sheets of parchment paper between layers for up to 3 months.Thaw: Transfer to the refrigerator overnight before serving.