Bring a medium pot of water to a boil on high heat. Add the potatoes and boil until soft, about 10-12 minutes depending on the size of the potatoes. Drain when done. Make sure not to over boil or they will break apart when smashed.
While the potatoes boil, melt the butter in a small microwave safe dish. Add parmesan cheese, garlic salt, dried oregano, and black pepper. Mix.
Place the boiled potatoes on a cutting board or smooth surface. With the bottom of a plastic cup or measuring cup gently smash the potatoes.
Place the smashed potatoes at the bottom of the air fryer basket and with a cooking brush or spoon, evenly spread the parmesan garlic butter on each potatoes.
Air Fry the potatoes for 7-10 minutes or until golden brown on the edges. Cook longer if you want them crispier.
Notes
We found that smashing the potatoes with a glass or metal cup or measuring cup does not work as well as the potato gets stuck to the cup.
Adjust cook time depending on the type of air fryer you have as not all air fryers are created equal.
Olive Oil- Use olive oil instead of butter at a 1:1 ratio.
Russet - use russet potatoes instead of Yukon gold. Make sure they are small or cut each potato into 4ths before Boiling. Make sure not to over-boil so they keep their form.
Red Potatoes - substitute for small red potatoes for a delicious result.
Vegan Butter: Use vegan butter instead of dairy butter at a 1:1 ratio.