Step 1: Cook the Pasta : Bring a large pot of salted water to a boil. Cook linguine according to package instructions until al dente. Drain and reserve ½ cup of pasta water. Set pasta aside.

Step 2: Sauté Mushrooms : Heat olive oil in a large skillet over medium heat. Add sliced mushrooms and sauté for 5–7 minutes until tender and lightly browned. Add minced garlic and sauté for an additional 30 seconds until fragrant.

Step 3: Make the Alfredo Sauce : Reduce heat to low and add butter to the skillet. Let it melt. Pour in heavy cream and stir to combine with the butter. Simmer gently for 3–4 minutes, stirring frequently. Add Parmesan cheese, salt, pepper, and nutmeg (if using). Stir until the cheese melts and the sauce is smooth.

Step 4: Combine Pasta and Sauce : Add the cooked linguine to the skillet with the sauce and mushrooms. Toss to coat the pasta evenly in the creamy sauce. If the sauce is too thick, add reserved pasta water a little at a time until desired consistency is reached.

Step 5: Serve : Transfer pasta to serving plates or a large serving dish. Garnish with chopped parsley and additional grated Parmesan. Serve immediately, warm and creamy.