INGREDIENTS
1
Egg plus 1 egg yolk
2 cups
All-purpose flour
1/2 tsp
Baking soda
1 cup
Brown sugar, firmly packed light
3/4 lb
Chocolate chips, semisweet
1/2 cup
Granulated sugar
1/2 tsp
Kosher salt
1 tbsp
Vanilla extract
2 tbsp
Espresso, finely ground roast dark
12 tbsp
(6 oz./185 g) unsalted butter, unsalted