INGREDIENTS
1
Egg, large
1/4 cup
(white) sugar, granulated
2 cups
All-purpose flour
1/2 tsp
Baking soda
3/4 cup
Brown sugar, packed light or dark
2 tsp
Cornstarch
4 oz
Dark or semi-sweet chocolate
1/2 tsp
Salt
1 tsp
Vanilla
1/2 cup
Butter, unsalted
zest from half of orange