Stir the soup, milk, soy sauce, black pepper, beans and 1 1/3 cups onions in a 3-quart casserole.
Bake at 350°F. for 25 minutes or until the bean mixture is hot and bubbling. Stir the bean mixture. Sprinkle with the remaining onions.
Bake for 5 minutes or until the onions are golden brown.