INGREDIENTS
4
Egg, large
1/2 tsp
Baking powder
1/2 tsp
Baking soda
12 oz
Bittersweet chocolate
1/2 cup
Brown sugar, packed light
1/4 cup
Cocoa powder, unsweetened Dutch-process
2 3/8 cups
Flour, unbleached
2 cups
Granulated sugar
1 1/4 tsp
Kosher salt
1 tsp
Vanilla extract, pure
2 sticks
Butter, unsalted