Heat oven to 350°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray. In baking dish, stir rice and broth until blended.
Bake uncovered 45 minutes, stirring once, until most of liquid is absorbed and rice is tender.
Stir in cooked spinach, Parmesan cheese, butter, salt, pepper and feta cheese. Sprinkle with pine nuts. Serve immediately.