Line a baking tray with parchment paper. Set it aside.
Add chopped dark chocolate to a heatproof bowl.
Melt the chocolate using a double boiler or microwave in short bursts, stirring often.
Stir in coconut oil if using, until smooth and glossy.
Pour melted chocolate onto the parchment-lined tray.
Spread evenly into a thin layer using a spatula.
Sprinkle almonds, pistachios, dried cranberries, and dried apricots evenly over the chocolate.
Gently press the toppings into the chocolate so they stick.
Sprinkle a small pinch of flaky sea salt on top if desired.
Place the tray in the fridge for 30–40 minutes until fully set.
Once firm, break into rough pieces by hand.