INGREDIENTS
3/4 cup
unsalted butter (softened to room temperature)
3/4 cup
dark brown sugar
1/4 cup
sugar
1
large egg (at room temperature)
2 tsp
vanilla extract
2 cups
all-purpose flour
2 tsp
cornstarch
1 tsp
baking soda
1/2 tsp
salt
1
and 1/4 cup semi-sweet chocolate chips