Nutella Pop Tarts

Bahan-bahan (9 porsi)

• 2½ cups all purpose flour
• 2 teaspoons granulated white sugar
• 1 teaspoon salt
• 10 tablespoons (1¼ sticks) very cold unsalted butter, (chopped (see notes))
• ¼ cup chilled vegetable shortening
• 6 tablespoons ice cold water
• 9 tablespoons Nutella
• 3 tablespoons brown sugar
• 1 teaspoon cinnamon
• 1 large egg, (whisked)
• 1 cup sifted powdered sugar
• 1 tablespoon milk
• ½ teaspoon ground cinnamon
• ½ teaspoon vanilla extract