Prepare rice in boiling salted water according to package instructions. Clean, wash and cut the peppers into strips. Peel onions and cut into slices. Wash, clean and dice the tomatoes.
Heat oil, fry onions and peppers for about 5 minutes while turning. Season to taste with salt and pepper. After 3 minutes add tomatoes. Wash oregano, shake dry. Pluck the leaves from the stalks and chop them, except for a little bit for garnishing.
Peel the garlic and press it through a garlic press. Mix sour cream, garlic, milk and oregano and season with salt and pepper. Pour rice into a sieve, put it back into the pot and stir in tomato paste and stock.
Cut the cheese into cubes. Mix vegetables, cheese and rice. Garnish with oregano. Serve with garlic dip.