Two-Faced Double Chocolate Chip Cookies

Ingredients

• 2 cup all-purpose flour
• 1 teaspoon baking soda
• 2 sticks of butter
• 1 cup granulated sugar
• 1/2 cup packed brown sugar
• 1/4 teaspoon salt
• 1/2 vanilla bean, scraped
• 2 eggs
• 1 cup semi-sweet chocolate chips
• 1/3 cup Dutch-process cocoa, sifted
• Maldon salt, to taste (optional)