Heat oven to 350° F. Prepare noodles according to package directions. Meanwhile, combine ricotta cheese, sour cream, milk, Parmesan and ham in a large bowl; mix well. Add peas, egg whites, dill or other herb, salt and pepper. Drain noodles; rinse with cool water. Add noodles to bowl; toss to coat with ricotta mixture. Spread evenly into 9 x 13-inch glass baking dish coated with cooking spray. Bake 40 to 45 minutes or until golden brown. Let stand 5 minutes before serving.