In a small bowl, dissolve yeast in warm water. In a large bowl, combine sugar, egg, oil, salt, yeast mixture and 4 cups flour; beat on medium speed until smooth. Stir in enough remaining flour to form a stiff dough., Turn dough onto a floured surface; knead until smooth and elastic, 6-8 minutes. Place in a greased bowl, turning once to grease the top. Cover and let rise in a warm place until doubled, about 1 hour., Punch down dough. Turn onto a lightly floured surface; divide into four portions. Divide and shape each portion into 12 balls. Place 2 in. apart on greased baking sheets. Cover; let rise in a warm place until doubled, about 30 minutes. Preheat oven to 350°., Bake 15-20 minutes or until golden brown. Remove from pans to wire racks.