Blanch the Brussels sprouts in boiling water, with some salt, and a bit of fresh garlic, for 2 minutes.
Remove, and steam them for 10 minutes.
If you don't have a steamer, boil them for 7-10 minutes .
Meantime, in a saucepan, on simmer, melt the butter, with garlic, parmesan cheese, paprika, bayleaf, cayenne pepper, black pepper, onion, and oregano. If you wish, melt and clarify the butter, before adding the other ingredients.
Remove, and drain the brussel sprouts.
Place in a bowl, or a service plate, and add the butter sauce, and toss.
Season with salt, and pepper, and sprinkle with parmesan cheese.