Divide dough into 10 portions. Cut string cheese into 10 pieces. Wrap each portion of dough around a piece of cheese; shape into balls. Place in a greased 9x5-in. loaf pan.
In a large bowl, combine the butter, Parmesan cheese and garlic salt until blended; spread over top of dough. Cover and let rise in a warm place until doubled, about 1 hour.
Bake at 375° for 20-25 minutes or until golden brown. Cool for 10 minutes before removing from pan to a wire rack. Serve warm.