INGREDIENTS
1
Egg plus 1 egg yolk, large
2 cups
All-purpose flour
1 tsp
Baking soda
1 cup
Brown sugar
2 tsp
Cornstarch
3/4 cup
Ghirardelli 60% cacao bittersweet chocolate chips
1/2 tsp
Salt
1 cup
Semi-sweet chocolate chips
1 tbsp
Vanilla extract
1/2 cup
White sugar
12 tbsp
Butter, unsalted