1 lb. bulk sausage
1/2 c. chopped onion
1 c. elbow macaroni
1 (10 1/2 oz.) can cream of celery soup
2/3 c. milk
3 beaten eggs
1 1/2 c. shredded processed American cheese

Cook macaroni according to package directions. Cook sausage and onion until browned. Drain off fat. Combine sausage mixture, macaroni, soup, milk, eggs and cheese. Place in 2 quart casserole. Bake at 350 degrees for 40 to 45 minutes.