Stir in the garlic and 1 1/2 cups of the parmesan. Add the shrimp and pasta to the skillet and coat in the sauce, then add the parsley and toss to combine. Taste and adjust the seasonings as needed.
One of my favorite pasta plates is the classic fettuccine Alfredo, but I've yet to perfect ... The process was easy, but I would've preferred to make the sauce over heat rather than in a separate ...