I make beef rouladen all the time. Very thin top round steak, salt/pepper, a very small strip of bacon, chopped onion, some mustard. Roll it up, skewer with a sturdy wooden toothpick, brown in a pan, then place in oven proof dish, add a little water and stick in the oven for about an hour. thicken the gravy, serve with noodles or a potato, and red cabbage. In Germany they are generally served that way, Spaetzle being one of the favourite noodles.