01 - In a large skillet over medium heat, melt the butter. Add the minced garlic and shallot, sautéing for 2–3 minutes until fragrant and translucent, being careful not to brown the garlic.
02 - Pour in the heavy cream and stir to combine with the aromatics. Bring the mixture to a gentle simmer, then immediately reduce heat to low to prevent scorching.
03 - Add the Italian herbs, black pepper, salt, and nutmeg if using. Stir well to distribute the seasonings evenly throughout the cream base.
04 - Gradually whisk in the Parmesan cheese, adding it in small portions to ensure smooth melting. Continue whisking for 3–4 minutes until the cheese is fully incorporated and the sauce has thickened to a velvety consistency.
05 - Taste the sauce and adjust salt or pepper as needed. If the sauce is too thick, add a splash of milk or reserved pasta water to reach the desired pourable consistency.
06 - Remove the skillet from heat. Toss the sauce immediately with cooked pasta of your choice—fettuccine, penne, or spaghetti work exceptionally well. Garnish generously with chopped fresh parsley and serve while hot.