Levain Bakery Copycat Cookies

Preheat the oven to 350°F. Spread the chopped walnuts on a rimmed baking sheet and toast for 8 to 10 minutes, stirring halfway through.

While the walnuts toast, whisk together the cake flour, all-purpose flour, salt, cornstarch, and baking soda in a medium bowl. Set aside. In a stand mixer fitted with a paddle attachment, cream together the cold butter, light brown sugar, and toasted or granulated sugar. Mix at medium-high speed until smooth, about 3 to 4 minutes, scraping down the sides of the bowl about every minute.

Weigh each dough ball out to 6oz and place on a parchment-lined baking sheet and refrigerate for 15 minutes. Bake for 9 to 11 minutes. Allow them to set on the pan for a couple of minutes before transferring to a wire rack to cool.

Storage Tip: Once baked and cooled, these cookies can be stored in an air-tight container for up to four days.