Preparation of Baking Sheet: Begin by preheating the oven to 400°F (200°C). Carefully line a baking sheet with parchment paper ensuring complete coverage.

Arrangement of Pretzels: On the prepared baking sheet, methodically lay out the pretzel sticks ensuring an even, single layer.

Caramel Preparation: In a stainless-steel saucepan, combine the unsalted butter, brown sugar, and salt. Place the saucepan on medium heat, stirring continuously until the mixture reaches a boiling point. Continue boiling for approximately 4-5 minutes, ensuring constant stirring to prevent burning. The mixture should thicken and take on a darker hue. Once achieved, promptly remove from heat and incorporate the pure vanilla extract.

Applying the Caramel: Pour the caramel mixture over the arranged pretzel sticks, ensuring a consistent and even spread.

Baking: Insert the baking sheet into the preheated oven and bake for precisely 5 minutes.

Chocolate Melting: While the pretzels are baking, take the finely chopped chocolate and place it in a microwave-safe bowl. Utilizing the microwave, melt the chocolate in 30-second intervals. After each interval, stir the chocolate thoroughly to ensure an even melt and to prevent overheating.

Chocolate Application: Upon removal of the baking sheet from the oven, allow it to cool for approximately one minute. Subsequently, pour the melted chocolate over the caramel-coated pretzels, ensuring a uniform spread.

Decoration (Optional): If desired, you may embellish the still-wet chocolate layer with festive-themed confectionery sprinkles.

Cooling and Setting: Relocate the baking sheet to a refrigerator. Allow the mixture to set for a period of 3-4 hours, or preferably, overnight.

Serving: Once fully set, utilize a sharp knife to cut the bark into uniform squares. Store in an airtight container to maintain freshness.

It is recommended to follow the instructions meticulously to achieve the best results.