Dark Chocolate Crackles

Ingredients

• 11-1/4 oz. (2-1/2 cups) unbleached all-purpose flour
• 1 tsp. baking soda
• 1/4 tsp. table salt
• 8 oz. (1 cup) unsalted butter, at room temperature
• 2 cups firmly packed light brown sugar
• 2 oz. (2/3 cup) natural, unsweetened cocoa, sifted if lumpy
• 2 tsp. finely grated orange zest
• 1 tsp. pure vanilla extract
• 3 large eggs
• 8 oz. bittersweet chocolate, melted and cooled until barely warm
• 3/4 cup (4 oz.) chopped chocolate (white, bittersweet, or semisweet)
• 1/3 cup granulated sugar; more as needed