Cook the gnocchi according to the instructions on the packet. Then drain, quench and drain. Dice the onion.
Fry the bacon in a pan and then take it out of the pan. Steam the onions in oil until translucent. Add the cream and stir in the mustard. Bring to the boil for 4 - 5 minutes.
Wash the chives and cut into small slices.
Season the sauce with salt, pepper and sugar. Mix in the gnocchi and chives and heat again briefly.