Heat broth in 2-quart saucepan over high heat just to a simmer. Reduce heat to low and cover.
Meanwhile, melt I Can't Believe It's Not Butter!® Spread in 3-quart saucepan over medium heat and cook onion, carrots and mushrooms, stirring occasionally, 5 minutes or until tender. Add rice and cook, stirring frequently, 2 minutes. Stir in lemon juice and cook until absorbed, stirring frequently. Stir in hot broth, 1/2 cup at a time, stirring frequently, until all broth is absorbed and rice is creamy, stirring in broccoli, asparagus, snow peas and lemon peel with last 1/2 cup broth. Sprinkle, if desired, with chopped fresh parsley and ground black pepper.