Nonstick cooking spray

2 16 -ounce packages frozen whole kernel corn

2 cups chopped red and/or green sweet pepper

1 cup chopped onion (1 large)

1 tablespoon butter or margarine

1/4teaspoon black pepper

1 10 3/4-ounce can condensed cream of celery soup

1 8 -ounce tub cream cheese spread with chive and onion or cream cheese spread with garden vegetables

1/4cup milk