Wash the chanterelles briefly in cold water, drain well, clean and wash. Peel and slice the onions. Wash parsley, shake dry and pluck the leaves from the stalks.
Heat the oil in a frying pan, fry the chanterelles and onion slices for about 3 minutes. Dust with flour and sauté while stirring. Deglaze with white wine, add cream and stock. Simmer for 3-5 minutes and season with salt and pepper. Prepare dumplings in boiling salted water according to package instructions. Let 12 dumplings cool down for the next day, cover and put them in a cool place. Arrange dumplings and cream chanterelles on plates, garnish with parsley and serve.