
Mash the potatoes and mix with the ground beef. Add salt, pepper and water. Work the meat mixture until smooth and shape into patties. Heat a skillet with 1 tbsp butter. Add the onions and cook over moderate heat until golden brown. Transfer the onions to a platter and keep it hot. Melt the remaining butter in the skillet and cook the patties over moderate heat until brown on both sides and cooked thoughout. Serve patties with a sauteed onions and vegetables of your choice.