Cook the pasta in salted water according to the instructions, quench briefly and place in a baking dish.
Fry the minced meat until crumbly, adding salt and pepper. Then add the leek to the pan and fry briefly. Now deglaze with the vegetable stock and simmer for about 5 minutes. Now stir in the processed cheese spoon by spoon and let it melt in it. Season everything to taste and, if necessary, add seasoning.
Add the leek and mince sauce to the pasta in the baking dish and mix. Sprinkle the cheese on top.
Now put in the preheated oven (top / bottom heat: 200 ° C, fan oven: 175 ° C) for about 20 minutes and bake.