All 3 dishes consist of macaroni noodles in a tomato-based meat sauce, so they look and taste fairly similar. American Chop Suey (also called American Goulash) is usually flavored with Italian seasoning and has green bell pepper. It comes from traditional Hungarian Goulash which is very similar but is seasoned with paprika. Beefaroni has a little more beef and doesn't have bell peppers.