Barbecue Beef Kebabs

Name: Barbecue Beef Kebabs
Ingredients: 1 small onion; 2 tbsp. grainy mustard; 2 tbsp. extra-virgin olive oil; 2 clove garlic; 1 tbsp. soy sauce; 1 tbsp. Worcestershire sauce; 1 tsp. dried thyme; ¼ tsp. salt; ½ tsp. freshly ground pepper; 1½ lb. boneless beef sirloin; ⅓ c. reduced-fat mayonaise; 2½ tbsp. cider vinegar; 2 tbsp. fresh chives; 1 tbsp. sugar; ½ tsp. salt; ¼ tsp. freshly ground pepper; 3 c. coleslaw mix; 2 c. red cabbage; 1 Golden Delicious apple; 2 small ears corn; 2 red bell peppers; olive oil