Preheat Oven: Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat.

Arrange Pretzels: Spread the pretzels in a single layer on the prepared baking sheet.

Melt Butter and Sugar: In a medium saucepan over medium heat, melt the butter and brown sugar together. Stir constantly until the mixture comes to a boil.

Add Vanilla and Salt: Once boiling, continue to cook for an additional 3–4 minutes without stirring. Remove from heat and stir in the vanilla extract and salt.

Pour Toffee Over Pretzels: Immediately pour the toffee mixture over the pretzels, making sure to coat them evenly. Use a spatula to spread the toffee if needed.

Bake: Bake in the preheated oven for 15–20 minutes, or until the toffee is bubbly and golden brown.

Melt Chocolate: Remove the pretzels from the oven and immediately sprinkle the chocolate chips over the top. Let them sit for a few minutes to soften.

Spread Chocolate: Once softened, use a spatula to spread the melted chocolate evenly over the pretzels.

Add Sprinkles: If desired, sprinkle holiday sprinkles over the chocolate for a festive touch.

Cool Completely: Allow the pretzels to cool completely at room temperature. Once cooled, break them apart into pieces.

Store: Store the butter toffee pretzels in an airtight container at room temperature for up to one week.