Melt the Butter and Oil: In a large skillet over medium heat, melt the room-temperature butter together with the extra virgin olive oil.
Brown the Mushrooms: Add the cleaned, trimmed mushrooms to the skillet and cook for 10–12 minutes, stirring occasionally, until they begin to turn golden brown and release their moisture.
Keep the Mushrooms Warm: Transfer the cooked mushrooms to a plate and loosely tent them with foil while you prepare the sauce.
Cook the Garlic: Add the minced garlic to the same skillet and cook for about 1 minute, allowing it to become fragrant.
Build the Cream Sauce: Whisk the cream cheese, grated Parmesan, and heavy cream into the skillet, continuing to stir until the cheeses have melted and the sauce is smooth and creamy.
Season the Sauce: Add the Italian seasoning, kosher salt, and ground black pepper, then stir thoroughly to distribute the seasonings.
Thicken the Sauce: Let the seasoned sauce simmer for 2–3 minutes, allowing the flavors to blend and the sauce to thicken slightly.
Add the Chicken Broth: Pour in the chicken broth and whisk until fully combined, loosening the sauce as needed.
Coat the Mushrooms: Return the cooked mushrooms to the skillet and gently toss them through the sauce until they are evenly coated.
Garnish and Serve: Remove the skillet from the