Place a portion of the mixture on each piece of meat. Roll to enclose stuffing and skewer shut. Heat oil and brown rolls on all sides. Cut carrots, celery and onions into large pieces. Turn them a few times in the hot fat.
Place rolls on top of the vegetables.
Combine stock, tomato and herbs and pour over the vegetables. Cover tightly and simmer for one hour or until meat is tender. Remove beef, take out skewers and keep warm. Remove vegetables with a slotted spoon and serve in a separate dish. Add enough water to the pan to equal one cup.