Cook the croissant noodles according to the instructions on the packaging.
Meanwhile, cut the spring onions and tomatoes into small pieces.
Fry the vegetables in a pan with a little butter and then deglaze with a little water (depending on how you want the sauce to be consistency). Stir some vegetable stock into the boiling water of the vegetable pan. Then stir the cream cheese and, alternatively, the sour cream into the vegetable pan and bring to the boil. As soon as the pasta is cooked add and stir in. Let it boil down briefly and then season to taste.