INGREDIENTS
1 stick
unsalted butter
1 3/4
cups light brown sugar
1/2 cup
smooth peanut butter
2
eggs plus one egg yolk
1 tsp
vanilla extract
2 1/4 cups
all purpose flour
1 tsp
baking powder
1/4 tsp
baking soda
1/2 tsp
salt
6 oz
semi-sweet chocolate chunks