INGREDIENTS
1/2 cup
butter
1 cup
granulated sugar
3/4 cup
all purpose flour
1/4 cup
dutch process cocoa powder
4 oz
bittersweet chocolate, finely chopped
2
eggs plus 1 yolk
1 tsp
vanilla extract
1/2 tsp
salt
1/3 cup
bittersweet chocolate baking chips
1/3 cup
semisweet chocolate chips