Place your skillet over medium-high heat and add the mushrooms. Let them cook without stirring at first so they can release their moisture. Once they start to brown, drizzle in olive oil and continue until golden. Transfer them to a plate and set aside.
In the same skillet, melt the butter and add the diced chorizo. Let it sizzle until crispy, which takes about two minutes. Lower the heat slightly, then add garlic, shallot, salt, and pepper. Stir until everything smells wonderfully fragrant.
Return the mushrooms to the pan and pour in the heavy cream. Stir gently, letting the sauce simmer on low for about three minutes so the flavors blend into a smooth, creamy base.
Meanwhile, bring a pot of salted water to a boil. Drop in the ravioli and cook according to the package directions—usually 2–3 minutes for fresh or a bit longer for frozen. Drain them well.
Add the cooked ravioli straight into the sauce, tossing gently to coat every piece. Sprinkle with chopped parsley and, if you like, another twist of black pepper. Serve immediately while it’s still hot and creamy.