– Heat butter in a pan to create the base for your creamy white sauce.
– Stir in flour to form a smooth roux that will thicken the sauce.
– Let the roux cook for a minute to remove any raw flour taste.
– Gradually whisk in warm milk to avoid lumps and get a silky texture.
– Add salt, pepper, and optional herbs for enhanced flavor.
– Cook until thick, then toss with pasta for a creamy, rich dish.