A different take on fettucine alfredo, using green spinach noodles. This is a rich, decadent treat. I usually just serve a salad with this. Make this right before serving, if it's allowed to sit, it becomes gummy
Cook noodles according to package directions; drain well.
In a wide frying pan over medium-high heat, melt butter; add onions and garlic and cook, stirring, for 2 minutes; add cream and cook until bubbling.
Add hot noodles to pan; using 2 forks, stir gently; add 1/2 cup of the cheese and stir until noodles are evenly coated; add 1/2 cup of the remaining cheese and stir again; add nutmeg and season to taste with salt and pepper; then stir again.
Serve immediately; pass remaining cheese at the table.