In 1-1/2-qt. casserole, combine soup, milk, soup and pepper. Stir in beans and 1/2 can onions. Bake at 350 F. 25 min. or until hot and bubbling, stir. Top with remaining onions. Bake 5 min. or until onions are golden brown. Serves 6. TIP: Use 1 bag (16 to 20 oz.) frozen green beans, 2 pkg. (9 oz. each) frozen green beans, 2 cans (about 6 oz. each) green beans or about 1-1/2 lb. fresh green beans for this recipe.