Peel and chop the onion. Clean, wash and slice the mushrooms. Fry onion and mushrooms in hot oil for about 5 minutes. Add stock and cream and bring to the boil briefly, stir in the sauce thickener. Dice ham. Add ham and peas to the sauce and heat up as well. Season to taste with salt and pepper.
Wash parsley, dab dry, put something aside for garnishing and chop. Add to the sauce. Cook the pasta in plenty of boiling salted water for 6-8 minutes. Drain, rinse with cold water and let drain. Arrange noodles as nests with the sauce on four plates. Garnish with parsley