Shish Kabob(Microwave)  
["1/2 c. wine vinegar", "1/2 c. vegetable oil", "1 tsp. onion salt", "1 clove garlic, cut in half", "1/4 c. soy sauce", "1 tsp. oregano", "1/2 c. water", "2 lb. boneless sirloin steak", "1/2 lb. small mushrooms", "12 tomato wedges or cherry tomatoes (very firm)", "1 green pepper cut in 1-inch squares"]
["Make marinade by combining vinegar, oil, onion salt, garlic, soy sauce, oregano and water in large bowl.", "Cut meat in 1-inch cubes.", "Add to marinade and let stand refrigerated 5 to 6 hours. Stir occasionally.", "Arrange meat cubes and vegetables alternately on 6 long wooden skewers.", "Place 2 or 3 skewers at a time on microproof dinner plate.", "Cook uncovered on High (maximum power) 1 to 1 1/2 minutes for medium rare.", "Repeat for remaining skewers. Cook slightly longer for well-done meat.", "(Total cooking time is 2 to 4 1/2 minutes.)"]
["wine vinegar", "vegetable oil", "onion salt", "clove garlic", "soy sauce", "oregano", "water", "boneless sirloin steak", "mushrooms", "tomato", "green pepper"]