Add the beef and onions to a hot skillet. Heat until cooked. Add brown rice, oregano, and thyme. Cook for another 5 minutes, while stirring occationally.
Blanch each dock leaf individually by bringing a pot of water to boil and putting each leaf in for only a few seconds. Remove and blot with a towel. Each leaf should be pliable, but still firm.
Once you have blanched each leaf, lay them on a tray and fill each with your leaves with your filling. Roll them and hold them together with a toothpick.
Enjoy!