1/2 cup Grated Parmigiano Reggiano cheese, plus more for serving
Instructions
Fill large pot with salted water and bring to boil over high heat. Cook pasta according to package directions. Reserve 1/4 cup pasta water. Drain and set aside.
Heat oil in large skillet over medium heat. Add onion, garlic and minced mushroom stems. Cook, stirring occasionally, until softened, about 4 minutes. Add mushroom caps, cream and season with salt and pepper. Simmer, stirring occasionally, for an additional 4 to 5 minutes.
Stir in cheese and pasta until coated. If sauce is too thick, stir in reserved pasta water. Garnish with additional cheese, if desired.