Preheat oven to 350 degrees and prepare a cookie sheet with parchment paper.
In a medium bowl, whisk together flour, salt and baking soda. Set aside.
In a mixer fitted with a paddle attachment, combine butter, sugar, and brown sugar. Mix at high speed until light and fluffy.
Add cocoa powder. Mix until combined.
Add eggs and vanilla extract. Mix until combined.
Add dry ingredients. Mix on a low speed until just combined.
Stir in chocolate chips, caramels and crushed pretzels.
With a small ice cream scooper, scoop out a dough ball. Crack a mini pretzel in half and lightly push it into the dough ball.
Bake for 9-11 minutes. and leave on the cookie sheet to cool.