Cut the spring onions into pieces. Clean the mushrooms and cut in half or quarter, depending on the size. Heat the oil in a large pan and fry the mushrooms vigorously. Fry the spring onions for approx. 1 min. Season with salt and pepper. Add the cream and 3 tablespoons of sauce thickener and simmer for approx. 1 minute while stirring.
Cook the ravioli in salted water. Drain. Serve the ravioli with the sauce and sprinkle with parmesan.