This weeknight-friendly recipe calls on garlic ... adding pasta water, until spaghetti is thoroughly coated. Remove pan from heat, add parsley, lemon juice, and Parmesan and toss well.
Once hot add the onions, garlic and ... finish with the Parmesan and season with salt and pepper. To serve, bring a large saucepan of salted water to the boil and cook the pasta for 2–3 minutes.