INGREDIENTS
2 1/4 cups
all-purpose flour
1 1/4 tsp
baking soda
1/4 tsp
salt
2 sticks
salted butter
1 1/4 cups
brown sugar
1/4 cup
granulated sugar
1
large egg plus 1 egg yolk
1 1/2 tsp
vanilla extract
1 tbsp
plain greek yogurt or sour cream
3/4 cup
semi-sweet chocolate chips
3/4 cup
milk chocolate chips
About 12 tablespoons of Nutella
Coarse sea salt for sprinkling