01 - Line a baking sheet with parchment paper to prevent sticking.
02 - Place the chopped chocolate in a heatproof bowl over a saucepan of barely simmering water and stir until smooth. Alternatively, melt in the microwave in 20-second intervals, stirring between each.
03 - Hold each strawberry by the stem and dip into melted chocolate, swirling to coat evenly. Allow excess chocolate to drip off.
04 - Immediately sprinkle the chocolate-dipped strawberry with chopped pistachios or dip into pistachios for a thicker layer.
05 - Place coated strawberries on the prepared baking sheet and let the chocolate set at room temperature for 30 minutes or refrigerate for 10–15 minutes to speed setting.
06 - Serve shortly after setting or store in an airtight container in the refrigerator for up to 24 hours.