1.Bring A Large Pot Of Lightly Salted Water To A Boil. Add Egg Noodles And Cook For 8 To 10 Minutes, Or Until Al Dente; Drain And Rinse Under Hot Water. 2.In A Slow Cooker, Combine The Soup, 2 2/3 Cup (Or 2 Soup Cans) Of Water, Sour Cream And Steak Sauce. Mix Until Smooth. Add Cooked Steak Pieces, Onions And Cooked Noodles. Cook On Low For 2 Hours, Or To Desired Taste And Consistency. 3.In A Large Skillet, Brown The Round Steak Pieces With The Onion To Desired Doneness.