14 Tbsp. (1 3/4 sticks) butter, unsalted and divided
1/4 cup granulated sugar
2 cups dark brown sugar, divided
2 cups and 2 tablespoons all-purpose flour
1/2 tsp. baking soda
1/4 tsp. baking powder
1/2 tsp. kosher salt
1 full egg
1 egg yolk
1 Tbsp. vanilla
Preheat the oven to 350 degrees. Melt and brown 10 tablespoons of butter in a skillet; this takes 3 to 5 minutes or until butter is dark golden. Transfer brown butter to one large bowl. Add four more tablespoons of butter. Set aside for 10 to 15 minutes.
Combine 1/4 cup granulated sugar with 1/4 cup brown sugar on a plate. Set aside to roll cookies before baking. Whisk together flour, baking soda and baking power in a medium bowl. Add 1 3/4 cups of brown sugar and the salt to butter mix. Add egg, yolk and vanilla; mix. Add flour mixture; mix.
Roll 1 1/2-inch balls of dough in reserved sugar. Place on cookie sheets, lined with parchment paper. Bake 12 to 14 minutes.
— recipe from Curtis Roush, guitar player for Bright Light Social Hour