Cook macaroni according to package direction; drain. Place in a 5-quart slow cooker; add margarine. In a bowl, combine the eggs, evaporated milk, soup, milk and 3 cups cheese. Pour over macaroni ; stir to combine. Cover and cook on low for 4 hours.

Sprinkle with the remaining cheese. Cook 15 minutes longer or until cheese is melted. Sprinkle with paprika.