1In a saucepan, melt the butter over medium heat. Continue cooking, stirring occasionally, until the butter turns a deep amber color and develops a nutty aroma.
2In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
3In a large bowl, combine the cooled brown butter, brown sugar, and granulated sugar. Whisk for 1-2 minutes until a smooth paste forms.
4Crack in the egg and add the vanilla extract. Mix until well combined.
5Fold the dry ingredients into the wet batter until just combined.
6Stir in the chocolate chips.
7Scoop 4 cookies onto the prepared baking sheet, leaving space between each cookie.
8Bake for 12 minutes or until golden and crispy at the edges, gooey at the center.