Preheat broiler. Rinse cod; pat dry. Cut into 4 portions; place on rack of a broiler pan. Sprinkle with salt and pepper. Stir sesame seeds into butter. Set aside 1 Tbsp. of butter mixture for vegetables. Brush cod with half of remaining butter mixture. Broil 6 inches from the heat 4 minutes; turn fish; brush with remaining half of butter mixture. Broil 5 to 6 minutes or until fish flakes easily.
Meanwhile, in a skillet, heat reserved butter mixture over medium-high heat. Add beans and orange slices. Cover; cook 2 minutes. Uncover; add garlic. Cook 5 to 6 minutes or until beans are tender, stirring often; serve with cod. Serves 4.