Clean and wash the mushrooms and, depending on size, cut them in half or quarters. Onions clean, wash and cut into pieces of about 1 cm. Wash thyme, shake dry and, except for 4 stems for garnishing, pluck leaves from the stems.
Prepare the pasta in boiling salted water according to the instructions on the packet. Heat oil, fry bacon briefly, add mushrooms and fry for about 5 minutes while turning. After 3 minutes add spring onions. Deglaze with wine, boil down to 1/3 of the liquid, add cream, bring to the boil.
Season to taste with thyme, salt and pepper. Thicken cream sauce with sauce thickener. Pour the finished pasta into a sieve. Put the noodles back into the pot and fold in the sauce. Arrange on plates and garnish with thyme.