Add the beef mince, garlic paste and a good sprinkle of pepper and salt to a large mixing bowl. Knead or stir the mince well. Then add the grated cheese and (panko) breadcrumbs.

Knead well again. Taste the mince and add extra pepper or salt to taste. Then divide the meat mince into 2 even portions, make thin patties. Place a piece of cling film on top of them and put them in the fridge to chill for about 30 minutes.

Add 2 tablespoons of the butter to a large non-stick pan and place it over medium-high heat until melted. Then add the hamburgers. Cook them for about 5 minutes until nicely browned. Then flip the burgers over and fry their uncooked side.

Remove the burgers from the pan (don’t wipe the pan clean) and place them on a clean plate. Cover with a piece of tinfoil to keep them warm. Add the remaining butter to the same pan you baked the burgers in and place it over medium-high heat until melted. Then add the sliced onion.

Gently fry the onion for about 10 minutes until it's nicely browned. Stir regularly. Then add the warm beef stock and worcester sauce. Season with some pepper and salt. Let the beef stock reduce by half and stir in the sauce thickener or cornstarch. Check the seasoning and add extra pepper or salt to taste. Then place the cooked hamburger steaks back into the pan on top of the onion sauce.

Cover the pan, turn the heat low and cook for another 4 minutes until the burgers are warmed through. Then take the pan off the heat. Place the burgers onto plates. Drizzle with onion gravy. Serve hot.