Bring a pot of salted water to boil and cook ravioli according to package directions. Meanwhile, in a large skillet, warm oil over medium heat. Sauté the onion until translucent (about five minutes). Add the rest of the ingredients except the cream and sauté until mushrooms start to brown (about 5 minutes). Lower the heat, cover and cook until mushrooms are tender (about 5 minutes). Uncover and add the cream. Taste and adjust seasoning. Gently add the cooked ravioli and delicately toss them until well coated. Enjoy! Buen provecho!