01 -
Bring a large pot of salted water to a boil. Add fettuccine and cook 9–11 minutes until al dente. Reserve ½ cup pasta water, then drain and set aside to maintain texture.
02 -
Heat butter over medium-high heat until foaming. Add mushrooms in a single layer and cook undisturbed 2–3 minutes for golden crust. Stir and cook another 3–4 minutes until deep brown. Season with salt and pepper, add garlic, and cook 30 seconds until fragrant without burning.
03 -
Deglaze skillet with white wine, scraping browned bits. Reduce by half over 2 minutes. Stir in broth and heavy cream, simmer on medium-low 4–5 minutes until sauce thickens. Add Parmesan and thyme, stir until cheese melts and sauce is glossy. Season with salt, pepper, and lemon juice to balance richness.
04 -
Add cooked pasta to skillet and toss to coat evenly. Add reserved pasta water one tablespoon at a time if sauce is too thick, achieving silky consistency. Let rest 1 minute to meld flavors, then remove from heat.
05 -
Serve pasta onto warm plates, distributing mushrooms evenly. Garnish with chopped parsley and additional black pepper. Serve immediately while sauce is creamy and pasta tender.