Ingredient:

• 3/4 cup butter, cubed
• 2 ounces unsweetened chocolate, chopped
• 1 cup packed brown sugar
• 1/4 cup light corn syrup
• 1 large egg, room temperature
• 2 cups all-purpose flour
• 2 teaspoons baking soda
• 1-1/2 teaspoons ground cinnamon, divided
• 1/4 teaspoon salt
• 1/2 cup confectioners' sugar