Fry the minced meat vigorously in the hot oil in a large saucepan, add the onions and fry briefly, stir in the chilli and paprika powder. Chop the cauliflower into bite-sized pieces and add to the pot along with the potato cubes. Add enough water to almost cover the ingredients. Season with salt and pepper, simmer with the lid closed for about 20 minutes, until the vegetables are soft. Stir in the processed cheese and season again with salt and pepper.