INGREDIENTS
1/2 cup
butter
1/2 cup
dark brown sugar, packed
1/2 cup
granulated sugar
2 oz
softened cream cheese
1
egg, plus one egg yolk, at room temperature
1 tsp
vanilla extract
2 1/4 cups
all purpose flour (fluff before measuring)
1 tsp
baking soda
1/4 tsp
salt
2 tsp
cornstarch
2 cups
semisweet chocolate chips