Step 1

Bring a large pot of water to a boil and add salt. Cook pasta until al dente according. package instructions, stirring occasionally. Drain, reserving 1/4 cup of the pasta water. Set aside.

Step 2

Meanwhile, in a large skillet, heat the butter over medium heat until it melts, stirring occasionally. Whisk in the heavy cream and bring to a boil.

Step 3

Cook until sauce thickens, about 5 minutes. Stir in Parmesan cheese until it melts. Remove from heat and stir in lemon juice, if using. Season with salt and pepper, to taste.

Step 4

Toss the cooked pasta with the sauce, I like to use tongs to make sure all of the noodles are coated. Add a little pasta water if the sauce needs to be thinned out. Taste and season with additional salt and pepper, to taste, If necessary.

Step 5

Transfer pasta to a large serving bowl or individual bowls and garnish with parsley and additional Parmesan cheese, if using. Serve immediately.