In large mixer bowl, combine 2 cups flour, yeast, ⅓ cup sugar, and salt; mix well. Heat milk, water and ⅓ cup butter until very warm (120-130 F; butter does not need to melt). Add to flour mixture. Add egg. Blend at low speed until moistened; beat 3 minutes at medium speed. By hand, gradually stir in enough remaining flour to make a soft dough. Knead on floured surface until smooth and elastic, about 5 minutes. Place dough in lightly oiled bowl and turn to grease top. Cover; let rise until dough tests ripe.