INGREDIENTS
2 2/3 cups
all-purpose flour, spooned and leveled
1 tsp
baking soda
1 tsp
salt
1 cup
unsalted butter, slightly firm and cut into chunks
1 cup
packed light-brown sugar
1/2 cup
granulated sugar
2
large eggs
2 tsp
pure vanilla extract
2/3 cup
sour cream
2 cups
semisweet chocolate, chopped
1 1/2 cups
chopped walnut or pecan pieces