01 -
Using a stand mixer, combine the melted butter with granulated and brown sugars on medium-low speed until the mixture comes together smoothly.
02 -
Mix in the egg, egg yolk, and vanilla extract until fully incorporated.
03 -
In a separate bowl, whisk together cake flour, all-purpose flour, kosher salt, and baking soda.
04 -
Add the dry ingredients to the butter mixture and mix just until combined. Do not overmix, especially if you want a chewy texture.
05 -
Shape the dough into 24 golf ball-sized portions and roll each in decorator's sugar. Place on a lined baking sheet and freeze until completely firm.
06 -
Preheat oven to 375°F (190°C). Arrange 12 frozen cookie balls per sheet, spacing about 1½ inches apart. Bake for 10-12 minutes or until the bottoms are light golden while tops remain pale and puffy.
07 -
Remove from oven and allow cookies to cool completely to room temperature to achieve the perfect soft, chewy consistency.