Peel the outer leaves from the sprouts, and chop the ends of the stalks off. Place the sprouts in a small baking dish and dot on the butter in small pieces. Sprinkle on a pinch of salt and pepper and place in the oven for 10 minutes.
After 10 minutes sprinkle on half of each of the cheeses. Pour over the cream, stir and sprinkle the remaining cheeses on top. Place back in the oven for 10-15 minutes until the cheese is golden and the sauce is bubbling.
Remove from the oven. Sprinkle with chopped parsley and serve.