Cook the pasta until al dente, drain and drain according to the instructions on the packet.
Peel and halve the onion and cut into thin slices. Wash the zucchini and cut into slices.
Put some oil in a pan and heat it, then add the onion and zucchini and cook covered for a while. Then add the water, crumble the stock cube over it and stir. Let it simmer a little. As soon as the zucchini is done, stir in the crème fraîche and season with the remaining spices, as well as salt and pepper.