Cook the spaghetti until al dente according to the instructions on the packet, then place in a sieve and drain.
Sweat the chopped onion in a pan with a little oil.
Quarter the zucchini lengthways and cut into slices approx. 1/2 cm thick. Add to the onions in the pan and fry a little. Then pour in the vegetable stock and whipped cream. Also add the shrimp.
Season to taste with garlic, oregano, salt and pepper and simmer gently for about 10 minutes.
Add the spaghetti together with the parmesan and mix well.