Heat fat or oil to 375°F in deep fat fryer.
Measure 1½ cups flour and the remaining ingredients into large mixer bowl.
Blend ½ minute on low speed, scraping bowl constantly.
Beat 2 minutes on medium speed, scraping bowl occasionally.
Stir in remaining flour.
Turn dough onto well-floured cloth-covered board; roll around lightly to coat with flour.
Roll dough gently 1/2 inch thick.
Cut with floured doughnut cutter.
With wide spatula, slide doughnuts into hot fat.
Turn doughnuts as they rise to surface.
Fry 2 to 3 minutes or until golden brown on both sides.
Carefully remove from fat; do not prick the surface.
Drain.
Serve plain, sugared or frosted.
