INGREDIENTS
•
1 cup (2 sticks) butter, at room temperature
•
3/4 cup dark-brown sugar
•
3/4 cup sugar
•
4 large egg yolks, at room temperature
•
1 teaspoon vanilla extract
•
2 1/4 cups flour
•
3/4 teaspoon baking soda
•
1/2 salt
•
9 ounces bittersweet chocolate, chopped into thin shards with a serrated knife
•
Coarse sugar, for dusting (optional)