Wash the potatoes and dry them well. Preheat the air fryer to 400°F
Spray the air fryer basket with olive oil. Add the potatoes to the air fryer basket. Spray the potatoes with more olive oil and season lightly with salt pepper.
Cook the potatoes for 15 minutes or until they are fork tender.
Remove the potatoes from the air fryer. Place them on a plate or counter and press them with a spatula or rolling pin just until they burst open.
Place the potatoes back in the air fryer basket. Don’t overcrowd them. It may be necessary to do two batches.
Stir together the melted butter and garlic, in a small bowl. Using a pastry brush, coat the potatoes with the garlic butter. Cook for an additional 8-10 minutes at 400°F. Remove them once they are crispy and golden brown.
Sprinkle with grated parmesan and serve.
Notes
To keep the potatoes warm before serving, place them in a 200°F oven for up to 30 minutes.They will keep in an airtight container in the refrigerator for up to 3 days.