Using a knife or fork, poke holes into a medium-sized Russet potato. Rub the potato with avocado oil, onion powder, and coarse salt. Place it in the air fryer for even cooking.

Set the air fryer to 390°F. Cook for 35-40 minutes, turning once halfway through. (The time will vary depending on the size of your potato.) If the potato gets too dark on the outside, lower the temperature to 370°F. When a fork pierces into the potato easily, it's done.

Carefully remove the potato from the air fryer. Cut through the potato lengthwise, being careful not to cut all the way through, and gently fluff the interior with a fork to create pockets for toppings.

Add a dollop of vegan butter to the hot, fluffed potato. Season with additional salt and pepper to taste for enhanced flavor.

Garnish with chopped chives for freshness and flavor, if desired. Serve immediately and enjoy your perfectly crispy and fluffy baked potato!