INGREDIENTS
1 cup
unsalted butter
2 1/4 cups
all-purpose flour
1 1/4 tsp
baking soda
1/2 tsp
coarse sea salt
1 cup
light brown sugar
1/2 cup
granulated sugar
1
large egg
1
egg yolk
2 1/2 tsp
vanilla extract
1 tbsp
plain yogurt (I used Greek yogurt)
1 cup
semisweet chocolate chips (I used jumbo)