INGREDIENTS
1 cup
unsalted butter ((2 sticks), room temperature)
1 cup
light brown sugar (, packed)
2 tsp
vanilla extract
1/2 cup
granulated sugar
1
large egg
1
large egg yolk
2 1/4 cups
all-purpose flour
1 tsp
salt
1 tsp
baking soda
8 oz
semi-sweet chocolate chips ((or milk chocolate), I like Ghirardelli's, chopped into small chunks)