1Set oven control to broil. Spray broiler pan rack with cooking spray. Peel squash. Cut squash crosswise into 1/2-inch slices; remove seeds. Cut pears lengthwise into 8 pieces; cut out cores. Brush squash and pears with margarine. Place squash on rack in broiler pan.
2Broil with tops 2 to 3 inches from heat 4 minutes; turn. Add pears, cut sides up, to rack. Broil 3 to 4 minutes or until squash and pears are tender.
3Place cabbage on large platter. Top with squash and pears. Sprinkle with apple and walnuts. Drizzle with dressing.