01 - Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Reserve 1/2 cup of pasta water, then drain the pasta.
02 - While the pasta cooks, melt the butter in a large skillet over medium heat. Add the minced garlic and sauté for 1–2 minutes until fragrant, but not browned.
03 - Pour in the heavy cream and milk, stirring to combine. Bring to a gentle simmer and cook for 3–4 minutes, allowing the sauce to thicken slightly.
04 - Stir in the grated Parmesan cheese, black pepper, salt, and red pepper flakes. Continue to simmer until the cheese is melted and the sauce is smooth.
05 - Add the drained pasta to the skillet and toss to coat in the sauce. If the sauce is too thick, add reserved pasta water, a little at a time, until desired consistency is reached.
06 - Stir in the chopped parsley and basil. Serve immediately, garnished with extra Parmesan and additional herbs if desired.