Melt the Chocolate: In a heatproof bowl, melt the dark chocolate over a pot of simmering water (double boiler method). Stir occasionally until smooth, then remove from heat. Alternatively, you can melt the chocolate in the microwave in 30-second intervals, stirring until fully melted.
Prepare the Baking Sheet: Line a baking sheet (approximately 9x12 inches) with parchment paper for easy removal later.
Combine Ingredients: In the melted chocolate, mix in the chopped nuts and dried cranberries (and orange zest if using). Stir until evenly distributed.
Spread the Mixture: Pour the chocolate mixture onto the prepared baking sheet. Use a spatula to spread it into an even layer, about 1/4 inch thick.
Sprinkle with Sea Salt: While the mixture is still warm, sprinkle the sea salt evenly over the top. Add extra nuts or fruit on top if desired for decoration.
Chill to Set: Place the baking sheet in the refrigerator for about 30-45 minutes or until the chocolate is completely set.
Break into Pieces: Once set, remove the bark from the baking sheet and break it into irregular pieces.
Serve or Store: Enjoy immediately or store in an airtight container at room temperature for up to a week.
Notes
Store in an airtight container at room temperature for up to a week.