Prepare an 8x8 pan with a sheet of parchment and lightly buttered edges.
Chop the peanuts and rough chop ~¼ cup pretzels. Set aside.
Melt the chocolate or chocolate chips with 2 tsp refined solid coconut oil.
Pour about half the melted chocolate into the bottom of the prepared pan until the bottom is covered. Pro Tip: We like the bottom layer a bit thick but divide the chocolate to your preference. Sprinkle some chopped pretzel pieces onto the chocolate evenly. Place the pan in the refrigerator or freezer for about 10 minutes to harden.
While the chocolate is hardening, stir together the peanut butter, maple syrup, melted coconut oil, vanilla extract, and salt until smooth and combined. Set aside.
Once the bottom layer of chocolate is hard, pour the peanut butter mixture over the chocolate.
Then pour the remaining melted (partially cooled) chocolate over the peanut butter to cover it completely. Pro Tip: If the chocolate you are pouring starts to thicken, just warm it in the microwave for ~10-15 seconds to remelt). I used pretzel sticks on the top and laid them out in a pattern, but pretzel twists or crushed pretzels work as well.
Add a sprinkle of chopped nuts, and flaky sea salt to garnish. I had some leftover chocolate some added a swirl of chocolate on top as well.
Return to the refrigerator or freezer to harden completely before slicing. Pro Tip: Before slicing these bars, they must be completely set and rock solid or the peanut butter squeezes out. I put them in the freezer for a few hours or overnight and then cut them with a sharp knife. They are best served chilled. Store in a sealed container in the refrigerator or freezer.