Heat butter in a large skillet over medium high heat. Add garlic and cook, stirring frequently, until fragrant, about 1-2 minutes.
Add in the chicken broth, milk, and fettuccine. Season with salt and pepper.
Bring the pot to a boil, then reduce heat and simmer, stirring occasionally, until pasta is cooked through, about 18-20 minutes.
Stir in Parmesan. If the mixture is too thick, add more milk as needed until desired consistency is reached.
Serve immediately, and top with parsley.
Steam
2021
Original recipe called for 1 cup of milk. Adjust pasta cooking time as needed for the brand of pasta you are using.