In a medium-sized mixing bowl, combine the creamy peanut butter with the powdered sugar. Blend thoroughly until the mixture becomes smooth and well-incorporated.
Take one mini pretzel, and using either a teaspoon or your fingertips, generously spread about a teaspoon of the peanut butter mixture on one side of the pretzel.
Carefully press another pretzel on top of the peanut butter-covered pretzel to form a sandwich. Continue this process until you have filled all the pretzels.
In a microwave-safe bowl, combine the semi-sweet chocolate chips and coconut oil. Microwave in 30-second intervals, stirring after each interval, until the chocolate is completely melted and smooth.
Dip each peanut butter pretzel sandwich into the melted chocolate, ensuring it's well-coated. Allow any excess chocolate to drip off before placing them on a baking sheet lined with parchment paper.
Optional: While the chocolate is still wet, lightly sprinkle a pinch of sea salt on top of each pretzel.
Once all pretzel sandwiches are fully coated, transfer the baking sheet to the refrigerator. Chill for approximately 30 minutes, or until the chocolate has set and hardened completely.
Notes
Serve on a decorative platter and drizzle extra melted chocolate for flair.