Spinach Pasta Toss

Yield:	4 Servings
Categories:	Pasta, Spinach

8	oz	Uncooked fettuccini
1/3	c	Butter
1/4	ts	Minced fresh garlic
2	c	Sliced fresh mushrooms
1	md	Onion; sliced into rings
1	pk	(10 Oz) chopped frozen spinach thawed and well
1/8	ts	Salt
1/3	c	Grated Parmesan cheese