Heat a large pot of water. When the water boils, pour in the pasta and cook for 10 minutes. Drain and set aside.
While the pasta is cooking, prepare the mushrooms: cut off the tip of the mushroom foot, quickly rinse them in clear water and wipe them with absorbent paper. Peel the hats and cut the mushrooms finely. Set aside.
Peel the onion and garlic and cut them finely.
In a frying pan over low heat, pour a little olive oil, onion and garlic. Cook for 4 to 5 minutes.
Wash and finely chop the parsley and add it to the pan with the mushrooms. Continue cooking for about 10 minutes.
Finally add the butter, let it melt and then pour in the cream.
Add salt and pepper to taste.Finally add the pasta to the sauce and mix so that all the pasta is well coated.Enjoy it hot!