Clean, wash and halve the mushrooms. Peel and finely chop the onion. Heat the fat. Fry the onion and mushrooms for about 5 minutes, turning them over. Season with salt and pepper. Deglaze with white wine and vegetable stock. Let it boil down at high heat for about 5 minutes.
Cook the noodles in boiling salted water for about 8 minutes. Meanwhile wash the parsley and cut it into fine strips except for a few leaves for garnishing. Stir parsley and cream into the sauce. Sprinkle with sauce thickener, bring to the boil briefly. Season again with salt and pepper. Garnish pasta with sauce, parmesan, ham and parsley