In a large skillet over medium heat, melt 4 tablespoons of butter. Add the minced garlic and sauté for 30–60 seconds until fragrant.
Add the dry pasta directly to the pan and toss to coat in the garlic butter.
Pour in the chicken stock and bring to a boil. Cover and cook for about 5–6 minutes.
Uncover, stir, then cover again and continue cooking until the pasta is just al dente and most of the liquid has reduced, leaving a little sauce in the pan.
Add the remaining 2 tablespoons butter, ½ tablespoon soy sauce, white pepper, onion powder and a generous amount of Parmesan cheese. Toss until the noodles are glossy and fully coated.
Plate the noodles, top with more Parmesan, garnish with herbs if desired, and serve immediately.