Line a large cookie sheet with parchment paper or silicone baking mat.
Preheat oven to 350F degrees.
To brown the butter: In a saucepan, melt butter over medium heat, whisking as it melts, foams, bubbles, and eventually little brown bits form and it turns amber.
Immediately pour into a large heatproof bowl and use a spatula to scrape all the little brown bits into the bowl.
Using a stand or hand mixer, beat the vanilla and sugars into the butter for a couple minutes, until it lightens a bit.
Beat in eggs for about 30 seconds.
Add the baking powder, 1/2 tsp. salt, and about a third of the flour.
Mix slowly, add another third of flour, mix, and add the last of the flour until just combined.
Stir in the pretzels, caramel bits, and chocolate chips until evenly distributed.
Scoop out very large balls of dough and place on the prepared baking sheet, leaving plenty of space in between.
Add more broken pretzel pieces, caramel bits, and chocolate chips to the tops of the dough balls to preference.
Sprinkle with sea salt.
Bake 13 minutes until golden around the edges.
Remove and allow to cool on the sheet for 5 minutes.
Then, transfer cookies to a wire rack to cool completely.
Serve and enjoy!