Veal, pork chops or pork tenderloin, ground beef, filet mignon, and sirloin or cube steak are meats that go well with cordon bleu sauce. The primary meat is typically accompanied by some type of ham and cheese.
An Epicurious recipe calling for veal cutlets or scaloppine adds Gruyere and baked Virginia ham. The Food Network uses pork chops along with Canadian bacon and fontina cheese. A Serious Eats recipe includes pork tenderloin, smoked tavern ham and Swiss cheese. Food.com's recipe with ground beef also contains mozzarella cheese and ham or bacon. A Los Angeles Times recipe combines filet mignon, sirloin or cube steak, Swiss cheese, and ham or prosciutto.