Brown Butter Chocolate Chip Cookie Bars

0 Preheat your oven to 350°F (175°C). Grease an 8x8-inch baking pan and line it with parchment paper, leaving some overhang for easy removal.
1 In a saucepan over medium heat, melt the butter. Cook, swirling the pan occasionally, until the butter turns golden brown and develops a nutty aroma, about 5-7 minutes. Remove from heat and let it cool slightly.
2 In a large mixing bowl, combine the brown sugar and granulated sugar. Pour the slightly cooled brown butter over the sugars and mix until well combined.
3 Add the egg and vanilla extract, mixing well until fully incorporated.
4 In a separate bowl, whisk together the flour, baking soda, and salt.
5 Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Be careful not to overmix. Fold in the chocolate chips.
6 Transfer the cookie dough to the prepared baking pan and spread it out evenly using a spatula
7 Place the pan in the preheated oven and bake for 20-25 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out clean or with a few moist crumbs.
8 Allow the cookie bars to cool completely in the pan on a wire rack. Once cooled, use the parchment paper overhang to lift the bars out of the pan and transfer them to a cutting board. Slice into bars and serve.