Chocolate Cookie Sandwiches - Alex Guarnaschelli | Iron Chef and Food Network Celebrity

Ingredients

• 2 -1/2 ounces (about ½ cup plus 1 tablespoon) semi sweet chocolate, roughly chopped
• 1 -1/2 ounces (about 1/3 cup) unsweetened chocolate, roughly chopped
• 3 tablespoons unsalted butter, cut into small pieces, plus more for greasing the pans
• 1 large egg
• 1/3 cup sugar
• 1 teaspoon vanilla
• 1 tablespoon plus 2 teaspoons all-purpose flour