01 - Bring a large pot of salted water to a boil, then cook the pasta according to package instructions until al dente. Reserve 1/2 cup of pasta water before draining.
02 - In a large skillet over medium heat, melt butter with olive oil. Add minced garlic and sauté for 1 minute until fragrant without browning.
03 - Stir in heavy cream and whole milk, bring to a gentle simmer, and cook for 2 to 3 minutes to combine flavors.
04 - Reduce heat and add grated Parmesan cheese, stirring until melted and sauce is smooth. Season with salt, black pepper, and nutmeg if desired.
05 - Add the drained pasta to the skillet and toss to coat evenly with the sauce. Adjust consistency by adding reserved pasta water as needed.
06 - Plate the pasta immediately and garnish with chopped parsley and extra Parmesan cheese.