Preheat the oven to 180–200°C.
Fry the kidney cubes in a very hot pan with the olive oil. When they are caramelized, add the sherry.
Put the chorizo on a baking tray and place in the oven until caramelized – a couple of minutes. Then add the parsley, garlic, panko, salt and pepper to the tray, mix together and return to the oven (add a little bit more oil if you need) until the panko becomes golden brown – check after a couple of minutes.
Put the caramelized kidneys on plates, then cover completely with the crumble mix and serve: you should eat this with a spoon for scooping it up.