Chocolate Chip Bars

10-1/2  ounces		cups all-purpose flour
1/2  teaspoon		table salt
1/2  teaspoon		baking soda
1-1/2		tablespoons unsalted butters
7  ounces		cup dark brown sugar
3-1/2  ounces		cup granulated sugar
1		large egg
1		large egg yolk
2  teaspoons		vanilla extract
5  ounces		semi sweet chocolate chips
5  ounces		bittersweet chocolate chips
1  teaspoon		Sea salt, for sprinkling over bars

Tip: For nutritional information on all the ingredients in Chocolate Chip Bars just click on each ingredient name. Then adjust the serving size for any Chocolate Chip Bars ingredient with the serving size tool in the nutrition facts area to the right to see how you can save calories, carbs and more.

Heat oven to 325 degrees F. Butter the bottom and sides of a 9x13 inch metal baking pan. Put a long piece of parchment paper in the bottom of the pan, letting the parchment extend up two sides of the pan and overhang slightly on both ends. Place another piece of parchment paper in the same manner, perpendicular to the first sheet. (This will make it easy to remove the bars from the pan after they have baked.) Butter the parchment.
In a 10-inch skillet over medium-high heat, melt butter. Continue cooking, swirling pan constantly until butter is dark golden brown and has nutty aroma, 1 to 3 minutes. Remove from heat and transfer to a large heatproof bowl. Cool to room temperature.
In a medium bowl, whisk together flour, salt, and baking soda; set aside.
In a large bowl, whisk together browned butter and sugars until combined. Add egg, egg yolk, and vanilla and mix well. Using a rubber spatula, fold dry ingredients into egg mixture until just combined. Fold in chocolate chips. Transfer to prepared baking pan and smooth the top with a spatula. Sprinkle the bars with sea salt.
Bake until top is light golden brown, slightly firm to the touch, and edges start pulling away from sides of pan, 27 to 30 minutes. Cool on wire rack to room temperature. Remove bars from pan by lifting parchment overhang and transfer to cutting board. Cut into 2-inch squares and serve.