Prepare the meatballs and allow them to rest in the refrigerator for at least 30 minutes. Then heat 1 Tbsp of vegetable oil in a sauté pan and brown off the meatballs and drain away the fat and set meatballs aside.
In the same pan, add the butter, then sauté the onions until caramelized, add the mushrooms and sauté for one or two minutes then add the sherry and flame it (light it) to remove the alcohol. If it does not light, don’t be concerned, just cook for another 3-4 mintues until the alcohol aroma is gone.
Start your water for the noodles, and when boiling add the noodles in and cook until just al dente and then drain.
While the noodles are cooking, add the meatballs back into the pan, add the cream into the meatballs and gently bring it all back to a simmer. Finish by pouring the meatballs and sauce over the noodles and sprinkle the chives or green onions on top and serve.