Prep the pan. Line a baking sheet with parchment paper. Clear a spot in your fridge or freezer for quick setting.
Melt the chocolate. In a microwave-safe bowl, heat chocolate in 20–30 second bursts, stirring each time, until smooth and glossy.
Or use a double boiler over low heat. Do not overheat.
Spread the base. Pour melted chocolate onto the parchment and spread into a rectangle about 1/4 inch thick. Keep it even for a clean snap.
Swirl it in. Dollop spoonfuls of warm caramel over the chocolate. Use a toothpick or skewer to gently swirl, creating ribbons.
Don’t overmix or you’ll lose the marbled look.
Add texture. Sprinkle flaky sea salt over the surface. Add any optional toppings while the chocolate is still soft so they adhere.
Set the bark. Refrigerate for 30–45 minutes or freeze for 15–20 minutes, until fully firm.
Break into pieces. Lift the parchment and snap the bark into shards. Aim for hand-held sizes for easy serving.
Store properly. Keep in an airtight container.
Layer with parchment to prevent sticking.