INGREDIENTS
1
Egg, large
2 cups
All-purpose flour
1/2 tsp
Baking soda
6 oz
Bittersweet chocolate
1/4 cup
Brown sugar, packed
1
Fleur de sel
1 1/2 cups
Granulated sugar
3/4 tsp
Kosher salt
1 1/2 tsp
Vanilla extract, pure
2 sticks
Butter, salted or unsalted
2 tbsp
Water