Dip the beef strips into the marsala wine and let it soak into the meat.
Combine the flour,  salt and pepper together and drench the marsala soaked beef strips in the flour.
In a hot  skillet,  add the olive oil and brown off the meat.
Add the onions and garlic and cook until onions are translucent.
Add the white wine to deglaze the pan and form a sauce.
Add the cream and mushrooms an simmer until the mushrooms soften a bit and you have a nice gravy.
Serve this on top of your noodles.