Bring a large pot of salted water to a boil. Add the fettuccine or linguine and cook for 1 minute less than the package instructions recommend, to ensure the pasta will be al dente when finished in the sauce. Just before draining, scoop out about 1 cup of the pasta cooking water and set it aside. Drain the pasta and set aside until ready to combine with the sauce.

While the pasta cooks, melt the unsalted butter and heat the olive oil together in a large skillet over high heat. Add the sliced mushrooms and cook, stirring regularly. When the mushrooms start to sweat and release their moisture, season them with a pinch of salt and black pepper. Continue cooking until the mushrooms are pretty golden, about 4-5 minutes. I like to use a mix of white and cremini mushrooms for extra depth of flavor.

Add the minced garlic to the golden mushrooms and cook for another minute, just until the garlic turns golden and fragrant. Stand back and carefully pour in the white wine (or your chosen substitute), as it will steam. Stir, scraping the bottom of the skillet to pick up any browned bits. Simmer the mixture rapidly until the wine is mostly evaporated and the strong winey smell is gone.

Pour in the low-sodium chicken broth, heavy cream, finely grated Parmesan cheese, and the remaining salt and black pepper. Stir to dissolve the Parmesan and bring the sauce to a simmer. Let it cook, stirring regularly, for about 2 minutes to allow the flavors to meld and the sauce to thicken slightly.

Transfer the drained pasta from Step 1 into the skillet with the creamy mushroom sauce. Toss well for 1-2 minutes over medium heat until the sauce thickens and beautifully coats the pasta. If the sauce becomes too thick, add a splash of the reserved pasta cooking water until you reach your desired consistency. I like to finish tossing the pasta in the sauce for those last few minutes—it absorbs all the flavors!

Immediately plate the creamy mushroom pasta. Garnish with roughly chopped parsley, if desired, and serve with extra Parmesan cheese on top. Enjoy your delicious meal while it's hot!