Grilled Jamaican Beef Kabobs

Preheat outdoor or indoor grill. In a food processor or blender container, combine first 9 ingredients (green onions through peppers); process until smooth. Place green onion mixture, beef and bell pepper pieces in a large zipper-topped plastic bag; seal and turn to coat. Marinate in refrigerator for 20 minutes. Transfer beef and bell pepper pieces from plastic bag (discarding marinade) to a large bowl. Add plantain pieces and toss well to coat. Onto each skewer, alternately thread 5 beef cubes, 3 red pepper pieces and 3 plantain pieces. Lightly coat kebabs with cooking spray and place them on grill rack coated with cooking spray. Cook for 4 minutes per side for medium-rare, or until they reach desired level of doneness. Garnish with green onion pieces and serve with lime wedges, if desired.