Cook the spaghetti in plenty of boiling salted water with 1 tablespoon of oil until al dente. Drain well.
Clean and wash the leek and cut into fine rind. Fry the minced meat in hot oil until crumbly, season. Fry the leek briefly. Stir in the soup, bring to the boil and pour in the cream. Let the sauce simmer for about 2 minutes.
Melt the cheese in flakes in the sauce while stirring. Bring to the boil again, thicken and season to taste. Serve with spaghetti.
Of course, other noodles such as farfalle, spirals or penne can also be used.