Finely grate the Parmesan cheese and let it sit at room temperature.
Melt 2 tablespoons of butter in a large skillet over medium heat.
Add the minced garlic and cook for 1–2 minutes until fragrant.
Stir in the chicken broth and optional seasonings.
Slowly pour in the milk while stirring, then bring the mixture to a gentle boil.
Add the angel hair pasta. As the noodles soften, use tongs to gently twist them into the liquid.
Cook for 4–5 minutes, stirring occasionally so the pasta doesn't stick together. This Garlic Parmesan Pasta cooks quickly, so avoid overcooking.
Reduce the heat to low and stir in the remaining tablespoon of butter.
Gradually add the grated Parmesan cheese, stirring continuously until smooth and creamy.
Let the pasta rest for 2–3 minutes so the sauce thickens naturally.
Garnish with fresh parsley and serve immediately.