INGREDIENTS
1
Egg yolk - discard or set aside egg white
1/4 cup
All-purpose flour
1/4 tsp
Baking soda
2
firmly packed tbsp Brown sugar, dark
3
heaping tbsp Chocolate chips, semisweet
1 tbsp
Granulated sugar
1 pinch
Kosher salt
1/4 tsp
Vanilla extract, pure
2 tbsp
Butter