Abdullah Beef

500 g minced beef
1 medium sized onion, chopped
125 g butter
1 egg
2 thick slices day-old bread, crusts removed, soaked in milk and squeezed
Salt and pepper
Toasted white breadcrumbs
¼ liter yogurt
60 g mushrooms, chopped

In a large frying pan, fry the onion in some of the butter until transparent. Remove from the heat and cool a little. Mix well together the meat, onion, egg, bread and seasoning. Shape into small balls, flatten slightly, roll in the breadcrumbs and brown slowly in butter. Add the remaining butter to the pan as needed. Add the yogurt and mushrooms and simmer for 30 minutes. Serve hot.