2) In a large bowl, combine the potatoes, 180g of the panko, the egg, cheese, bacon, onion, butter, sour cream, garlic, salt and pepper. Form the potato mixture into 7.5cm patties. Dredge in the remaining panko.
3) In a large frying pan, heat the oil over a medium-high heat. Add the potato cakes and cook for 3 to 4 minutes on each side, or until brown and crisp. Serve immediately.