Step 1

Bring a large pot of salted water to a boil and cook the pasta according to package directions, just until al dente. (Pasta will continue to cook when added to the sauce.)

Step 2

In a large saucepan, melt the butter over medium heat.

Step 3

Whisk in the cream and half and half. Heat the cream just to a simmer. Turn the heat off and whisk in the lemon juice and zest.

Step 4

Add 1 1/2 cups of cheese and stir until smooth. Stir in the nutmeg. Season with salt and pepper to taste.

Step 5

Add the cooked pasta to the sauce and the remaining cheese. Toss to coat until the sauce begins to thicken.

Step 6

Sprinkle with fresh parsley, if desired. Serve immediately.