Delicious chocolate chip cookie bars made with brown butter, light brown sugar, and semi-sweet chocolate, baked until golden and topped with flaky sea salt.
1: Preheat oven to 350°F (175°C).
2: In a medium saucepan over medium heat, melt the butter. Once boiling, swirl the pan or stir constantly until the butter turns a deep amber color (brown butter).
3: In a bowl, whisk together flour, baking soda, and salt. Set aside.
4: In a separate bowl, combine cooled brown butter, oil, brown sugar, and granulated sugar. Whisk for 1-2 minutes until a smooth paste forms.
5: Crack in the egg and add vanilla extract. Mix until well combined and the mixture turns into a smooth paste (2-3 minutes).
6: Combine dry ingredients into the wet batter and gently fold until just combined.
7: Add chocolate and mix with a spatula until evenly distributed. Avoid overmixing.
8: Line an 8x8-inch baking pan with parchment paper.
9: Press the batter into the prepared pan.
10: Bake for 25-30 minutes or until lightly golden.
11: Remove from oven and sprinkle with flaky sea salt.
12: Allow to cool completely in the pan before serving.
