Turn on oven to 400°F, season squash with 2 tbs extra virgin olive oil, salt and pepper and roast in the oven until slightly caramelized, about twenty minutes, set aside.
At the same time in a skillet cook onion gently over medium heat with remaining oil until slightly caramelized, about fifteen minutes. Add sliced mushroom and cook another five minutes over high heat, season with salt and pepper
Place a pot of water to boil, cook pasta according to directions
Drain pasta and toss with mushrooms mixture and roasted squash. Stir in parsley and cheese before serving
