Heat the oil in a large saucepan. Fry the mushrooms vigorously while turning. Add the onion and garlic and sauté briefly. Season with salt, pepper and paprika.
Add tomato paste and sauté briefly while stirring. Deglaze with 900 ml of water and cream. Add the spaghetti, bring to the boil, stir in the stock and cover everything over a medium heat for 25-30 minutes. Stir more often.
Season the spaghetti again with salt, pepper and paprika. If you want, you can also add a little rosemary or herbs from Provence.
Tip: Stir the spaghetti well every now and then so that they absorb the liquid evenly and do not stick to each other.