1    Boneless beef sirloin steak

           Cut 1 1/4" thick (about 2
           Lbs.)
    1/4 c  Packed brown sugar

      4 ts Cider vinegar

      1 tb Vegetable oil

      2 ts Chili powder

      1 ts Salt

      1 ts Hot pepper sauce

      1    8 oz. carton plain low fat

           Yogurt
    1/3 c  Minced green onions and

           Tops
    1/4 ts Garlic salt

     10 oz Fresh spinach

           Red bell pepper slices
           Paprika
  Trim fat from boneless beef sirloin steak;cut steak into 1 1/2 inch
  pieces.Mix brown sugar,vinegar,oil,chili powder,salt and hot pepper sauce
  in medium bowl.Add beef pieces;toss to coat.Let stand 15
  minutes.Meanwhile,stir together yogurt,green onions and garlic salt;set
  aside.Wash spinach;discard stems and pat dry. Coarsely chop spinach;set
  aside.Thread beef pieces on 6 to 8 - 9 inch skewers.Place beef on grill
  over medium coals.Grill beef 8 to 10 minutes,to desired doneness,turning
  frequently. To serve,place spinach around edge of large serving platter
  leaving center open for small serving bowl.Remove beef from skewers and
  arrange over spinach.garnish beef with peppers.Put yogurt sauce in serving
  bowl;sprinkle with paprika.Place bowl in center of platter.Serves 6 to 8.