Makes: 6 servings. Prep: 10 minutes. broil: 12 minutes. cook: about 10 minutes.
Blend butter, blue cheese and chives in a small bowl until creamy. Place on plastic wrap, and shape into cylinder. Refrigerate until ready to use.
Heat broiler. Sprinkle steak seasoning on both sides of sirloin. Coat broiler pan with nonstick spray. Broil sirloin about 6 minutes, turn and broil another 5 to 6 minutes or until it reaches 135°F on an instant-read thermometer.
Cook noodles and green beans in boiling salted water until tender. Drain and reserve.
Remove steak to cutting board and cut in thin slices. Toss one-quarter of the blue-cheese butter with hot noodles, beans and chopped tomatoes. Cut slices of remaining blue-cheese butter onto each portion of steak.