Crawfish Mac & Cheese

Crawfish tails, penne pasta (semolina, durum flour, niacin, iron, ferrous sulfate, thiamine mononitrate, riboflavin, folic acid), onions, celery, butter, flour, evaporated milk, egg yolks, cheese, milk, water, whey, milk protein concentrate, nonfat dry milk, whey protein concentrate, sodium phosphate, calcium phosphate, or less of: salt, calcium phosphate, lactic acid, sorbic acid, sodium citrate, sodium alginate, enzymes, apocarotenal, annatto, cheese