INGREDIENTS
1
Egg, large
2 1/4 cups
All-purpose flour
1/4 cup
Brown sugar, packed light
6 oz
Dark chocolate, semisweet or bittersweet
1
Demerara or coarse turbinado sugar
1/2 cup
Granulated sugar
1
Sea salt, Flaky
1 tsp
Vanilla extract
1 1/8 cups
Butter, salted