Save 1 cup of the cooking liquid before draining—the starch naturally emulsifies with the cream and cheese, creating a silkier sauce without lumps.

Create a roux-like base by melting butter into the hot pasta water first, which helps the cheese incorporate smoothly and prevents greasiness.

Combining sharp cheddar with mild mozzarella creates complex flavor layers—the mozzarella provides creaminess while cheddar delivers bold, tangy notes.

Reduce to low heat before stirring in heavy cream to prevent it from breaking or curdling, ensuring a luxuriously smooth final texture.

Sprinkle garlic powder in the final 30 seconds of cooking to preserve its pungent aroma and prevent it from becoming harsh or burnt-tasting.