Preheat the oven to 200 degrees C

Pulse the meat in a food processor until it looks like mince

Add the 1/4 onion and chopped herbs and spices and pulse again until well chopped and combined

Roll the pastry out and cut small circles in order to line a muffin tray

Place the filling into the pastry cases and place in the oven for 45 - 50 minutes

While the pies are cooking make the topping by frying the finely sliced onions with the oil in a frying pan

Cook for 2-3 minutes stirring all the time then add the sugar and vinegar and cook until sticky

Once the pies are done, remove them from the oven and top with the onion mixture. Sprinkle with cheese if desired and cook for 5-6 minutes more