1. Line a baking sheet with parchment or wax paper.

2. Crush pretzels into bite-sized pieces using a bag and rolling pin or by hand.

3. In a saucepan over low heat, melt peanut butter, honey or maple syrup, and butter. Stir continuously until smooth.

4. Remove from heat and stir in the vanilla extract.

5. Add the crushed pretzels to the warm peanut butter mixture and stir until well coated.

6. Scoop spoonfuls of the mixture onto the prepared tray, forming clusters.

7. Melt the chocolate chips in the microwave in 30-second bursts, stirring in between until smooth.

8. Drizzle melted chocolate over the clusters using a fork or piping bag.

9. Refrigerate for at least 30 minutes until the clusters are firm.

10. Sprinkle coarse sea salt over the top once chocolate has set (optional).