Get the fries really crisp: They're about to be covered in cheese sauce and ranch, so I cook them a little on the crisp side. That gives them a much better chance of holding up under all those toppings.
Season while they're hot: Toss the Cajun seasoning with the fries as soon as they come out of the oven, fryer or air fryer so it sticks well.
Shred your own cheese: Freshly shredded cheese melts more smoothly into the sauce. Pre-shredded cheese can sometimes give you a grainier result.
Take the sauce off the heat: Once the milk mixture has thickened, remove the pan from the heat before stirring in the cheese. This helps keep the cheese sauce smooth rather than oily or grainy.
Don't assemble them early: Have everything ready and add the cheese sauce and ranch just before serving. Once the sauces go on, the fries will start losing their crispness.
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