Place steak on a broiler pan. Broil 4 in. from the heat for 5-7 minutes on each side or until meat reaches desired doneness (for medium-rare, a meat thermometer should read 145°; medium, 160°; well-done, 170°).
Meanwhile, in a large skillet, saute onion in butter until tender. Add tomatoes and peppers; saute 1 minute longer. Add water and pepper sauce. Bring to a boil; stir in pasta with contents of seasoning packet. Return to a boil.
Reduce heat to medium; cook, uncovered, for 5-6 minutes or until pasta is tender, stirring frequently. Stir in cream; heat through. Thinly slice beef; serve over pasta. Yield: 4 servings.