Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper, ensuring it extends over the edges for easy removal later.
Spread the pretzel sticks evenly on the prepared baking sheet, forming a single layer. Bake in the preheated oven for 5 minutes.
While the pretzels are baking, melt the caramel candies with the heavy cream in a microwave-safe bowl. Heat in 30-second increments, stirring between each, until smooth and fully melted.
Remove the pretzels from the oven and immediately pour the melted caramel over them, spreading it evenly with a spatula or the back of a spoon.
In another microwave-safe bowl, melt the semisweet chocolate chips in the same manner—30 seconds at a time—until fully melted and smooth.
Drizzle the melted chocolate over the caramel-covered pretzels, using a spatula to spread it gently if desired.
If using chopped nuts, sprinkle them over the chocolate layer while it’s still soft, pressing them down lightly to adhere.
Finally, sprinkle a pinch of sea salt over the top to enhance the sweetness of the chocolate and caramel.
Allow the bark to cool at room temperature until set, or you can speed up the process by placing it in the refrigerator for about 30 minutes.
Once set, lift the bark from the baking sheet using the edges of the parchment paper and break it into pieces as desired.
Notes
For added crunch, consider using different types of nuts.