Grilled Caesar Beef Appetizer Kabobs

1	pound beef boneless sirloin steak, 3/4 to 1 inch thick, cut into 1-inch pieces
1	medium yellow or green bell pepper, cut into 1-inch pieces
1	cup 1-inch pieces pattypan or yellow summer squash
1 1/2	cups whole mushrooms
1 1/2	cups cherry tomatoes
1/2	cup Caesar dressing
1/4	teaspoon coarsely ground pepper
30	wooden skewers (6 to 8 inches)
	Romaine leaves
	Additional Caesar dressing, if desired
	Chopped fresh chives, if desired

1.	In large resealablefood-storage plastic bag, place beef, bell pepper, squash, mushrooms and tomatoes. Mix 1/2 cup dressing and the ground pepper. Pour over beef and vegetables; seal bag and turn to coat. Refrigerate at least 1 hour but no longer than 4 hours, turning bag occasionally. Soak skewers in water about 1 hour to prevent burning.
2.	Heat coals or gas grill for direct heat. Remove beef and vegetables from marinade; discard marinade. Remove skewers from water. Thread 1 or 2 pieces beef on each skewer. Add a mushroom, squash, bell pepper piece or tomato to end of each skewer.
3.	Cover and grill kabobs 4 to 6 inches from medium heat 6 to 8 minutes for medium beef doneness, turning frequently.
4.	Arrange romaine on serving platter. Top with kabobs. Spoon additional dressing into small bowl for dipping; sprinkle with chives.