PREHEAT oven to 375°F. Mix rice and water; spoon evenly onto center of each of 4 large sheets of heavy-duty aluminum foil. Top evenly with half of the fish. Cover with the spinach, cream cheese spread and remaining fish pieces. Drizzle each with 2 Tbsp. of the dressing.
BRING up foil sides. Double fold top and ends to seal packet, leaving room for heat circulation inside. Place foil packets in single layer in 15x10x1-inch baking pan.
BAKE 15 min. Remove packets from oven; let stand 5 min. Place 1 packet on each of 4 dinner plates. Cut slits in foil with sharp knife to release steam before opening.