01 -
Place butter in a medium saucepan and melt over medium-low to medium heat.
02 -
Pour in heavy cream or half and half and bring to a gentle simmer, avoiding a full boil. Whisk frequently for 5 minutes until slightly thickened.
03 -
Stir in minced garlic and cook for 1 minute, allowing the aroma to infuse.
04 -
Gradually add grated Parmesan cheese in two to three batches, whisking constantly until fully melted and the sauce achieves a smooth consistency.
05 -
Season with salt, freshly cracked black pepper, and optionally a pinch of freshly grated nutmeg to taste. If the sauce becomes too thick, adjust the consistency by adding a small amount of extra cream or reserved pasta water.
06 -
Toss the sauce with cooked pasta of choice or use immediately as desired.