Peel and finely chop the onion. Clean and wash the chanterelles and let them drain well on a sieve. Wash the chives, dab dry and cut into small rolls. Cook gnocchi in boiling salted water for 2-3 minutes until they float.
In the meantime, heat oil in a frying pan and sauté the onion until transparent. Add chanterelles and sauté while stirring. Deglaze with stock and cream and bring to the boil. Bind with sauce thickener and season with salt and pepper.
Drain the gnocchi and arrange on plates with the sauce. Serve sprinkled with chives.