Beef Stroganoff

1 ½ pounds round steak, cut in ¼ inch strips
2 tablespoons dry onion soup mix
1 can sliced mushrooms
1 cup sour cream

Brown steak strips in skillet.   Add soup mix and mushrooms with liquid.   Heat until boiling.   Slowly add sour cream and cook until thoroughly heated, about 2 minutes.   Serve on top of egg noodles.