Bring large pot with water to a boil, then add a pinch of salt and fettuccine. Cook as per package instructions or until al dente, about 8-10 minutes.
Meanwhile, in a high speed blender, add milk, cottage cheese, Parmesan cheese, butter, garlic, cornstarch, salt and pepper. Process until smooth.
Pour mixture into large non-stick skillet and cook on low-medium heat just until bubbling and thickened into a sauce, stirring constantly. Takes about 5 minutes. Do not overcook.
Drain fettuccine and add to the skillet. Using tongs, stir gently to coat and let simmer for 1-2 minutes. Stir again.
Serve hot garnished with parsley, if desired.
Notes
Store: Refrigerate pasta covered for up to 2-3 days.
Freeze: Do not freeze pasta as pasta generally does not freeze well.