Peel and roughly dice the potatoes and boil for 15 minutes in lightly salted water, then drain and allow to evaporate.
In the meantime, cut the spring onions into rings, clean and dice the peppers and finely chop the garlic.
Heat clarified butter in a large deep pan and add the potatoes with paprika and thyme and fry for about 3 minutes. Then add the spring onions and garlic and fry for another 5 minutes, turning occasionally.
Season with salt, pepper and chili powder, sprinkle with the cheese, cover the pan, let the cheese melt and serve immediately.