Add olive-oil into a skillet on medium-high-heat. Then add the onion and then saute for 5 minutes, stirring periodically. It is ok if it gets lightly browned.
Add the garlic, mushrooms and Italian seasoning and continue to cook, stirring occasionally, for another 5 minutes.
Stir in the Dijon mustard and white wine. Let it bubble for a few minutes.
Then Add the cream and gnocchi. Wait till it begins to bubble , then cover the pan and lower the heat and cook for 3 minutes.
Stir in the spinach, cover the pan again and cook for 3 minutes.
Stir in the parmesan and season with pepper and salt. Give it a flavor, gnocchi should to be soft. Otherwise, continue to cook for a couple of minutes.
Serve immediately with more parmesan cheese grated on top if desired.
