Cook the bulgar wheat in simmering water for 5 minutes or until tender. Rinse in cold water and drain. Mix with the lamb mince and ground cumin and season well.
Shape into 4 large or 8 small patties. Heat a little oil in a frying pan and cook the patties and onion rounds in a single layer. The lamb will need about 4-5 minutes on each side but the onion may cook a little quicker.
Stuff the pitta with the lamb burgers and onions and serve with houmous or tzatziki and a few salad leaves.