Lightly coat 9" x 13" (23cm x 33cm) baking pan with nonstick spray; set aside.
Combine the apple juice with the dried fruit and raisins, cover with plastic wrap and microwave for 1 minute. Set aside to cool to room temperature.
Mix together all of the dough ingredients, except the fruit, and knead on low speed using an electric mixer until the dough is soft and elastic. Knead in the cooled fruit and the reserved liquid from the juice.
Allow the dough rise for 1 hour, covered.
Divide and roll the dough into 20 balls, slightly larger than a ping pong ball, with lightly oiled hands. Arrange them in the prepared pan in 4 rows of 5.
Cover the pan, and let the buns rise for 1 hour or until puffed and the edges are touching one another. Meanwhile, preheat the oven to 375°F (190°C).
Whisk together the reserved egg white and milk, and brush it over the buns.
Bake the buns for 20 minutes or until golden brown. Remove from the oven, and transfer to a rack to cool completely.
Mix together the icing ingredients, adding just enough milk to create a sturdy and pipeable icing and pipe it in a cross shape atop each bun.