01 - Place the butter in a medium saucepan over medium heat. Cook, stirring frequently, until melted and golden brown with a nutty aroma, about 5 to 7 minutes. Pour into a large mixing bowl and let cool for 10 minutes.
02 - Add the brown sugar, granulated sugar, and honey to the browned butter. Whisk until smooth and well blended.
03 - Add the eggs and vanilla extract to the sugar mixture. Whisk vigorously until well combined and the batter appears glossy.
04 - In a separate bowl, whisk together the all-purpose flour, baking soda, baking powder, and fine sea salt until evenly distributed.
05 - Gradually add the dry ingredients to the wet mixture, folding gently with a spatula just until incorporated. Do not overmix.
06 - Fold in the semi-sweet chocolate chips, toffee bits, and chopped pretzels until evenly distributed throughout the dough.
07 - Cover the dough and refrigerate for at least 30 minutes, or up to 2 hours for thicker cookies.
08 - Preheat the oven to 350°F. Line baking sheets with parchment paper.
09 - Using a cookie scoop or tablespoon, portion about 2 tablespoons of dough per cookie onto the prepared baking sheets, spacing them 2 inches apart.
10 - Bake for 11 to 13 minutes, or until the edges are golden brown but the centers still look just set.
11 - Remove from the oven and immediately sprinkle the tops with flaky sea salt. Let cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.