taco bell nacho cheese sauce

In a medium saucepan, melt the butter over medium heat.

Whisk in the flour and cook for about 1 minute, stirring constantly, to create a roux. This will help thicken the sauce.

Gradually add the milk to the roux, whisking continuously to prevent any lumps from forming. Cook for about 5 minutes, or until the mixture has thickened.

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