Chop the leek and carrots and fry in a little oil. Deglaze with water and add the cashew butter. When simmering, a creamy sauce is created. If necessary, add more water. Season with vegetable stock, nutmeg, salt and pepper (I always use white).
Drain the pasta.
Note: The cashew butter makes it taste almost like a cream sauce. A popular food for us because it is quick and healthy. I occasionally fry the vegetables in ghee instead of in oil - but then they are no longer vegan.