Start with chilled mac n cheese: Make sure your leftover mac and cheese is cold and firm before you start. If not, the cheese bites will fall apart.
Don't crowd the air fryer basket: Leave some space between the mac and cheese balls or cook them in batches if you can't fit them all in there in a single layer.
Get them golden: I like to spritz a little olive oil cooking spray over the air fryer mac and cheese balls in the air fryer to help them crisp up perfectly.
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