Hot cooked noodles Freeze steak 1 hour to make slicing easier.Cut steak into very thin slices across the grain.In a 2 litre microwave-safe casserole, combine beef and onion.Cover with lid;microwave on high 5 minutes or until beef is no longer pink,stirring once during cooking. In small bowl,stir soup until smooth;stir in sour cream and paprika.Add to beef,stirring to coat.Cover,microwave @ 50 percent power 3 minutes or until heated through.Serve over noodles.Makes about 3.5 cups or 4 servings.