INGREDIENTS
1
Egg
2 cups
All-purpose flour
1/2 tsp
Baking soda
6 oz
Bittersweet chocolate
1/4 cup
Brown sugar, packed light or dark
1 1/2 cups
Granulated sugar
3/4 tsp
Salt
1 1/2 tsp
Vanilla extract, pure
1
2 pound/227 grams unsalted butter (2 sticks), unsalted