Melt 2 tablespoons vegetable oil in pan. Add 1/2 chopped onion, fry until just beginning to brown. Add 1 pound hamburger, cook until browned. Pour off excess fat and add:

1 (#2 1/2) can tomatoes (3 1/2 c.)
1/2 c. cut-up green pepper
1 c. diced celery
2 tsp. salt
1/4 tsp. celery salt
1/8 tsp. pepper
1 (8 oz.) pkg. elbow macaroni, which has been cooked, rinsed and drained

Bring to boil, cover and simmer about 30 minutes, stirring occasionally.