Preheat the air fryer to 400℉.
Peel off most of the garlic's outermost skin, but leave the whole bulb intact.
1 bulb garlic
Trim about ¼ inch off the top of the garlic bulb to expose the cloves.
Place the garlic on a large piece of aluminum foil, then drizzle 1 teaspoon olive oil and a pinch of salt over the exposed cloves and close the foil into a pouch.
1 teaspoon light olive oil, 1 pinch Kosher Salt
Place foil wrapped garlic in the preheated air fryer basket and air fry for 35-40 minutes, until you can pierce the center of the bulb with a knife.
Let the roasted garlic cool slightly. About 10-15 minutes.
Gently squeeze the root end, pushing out all the soft, roasted garlic into a small bowl. Discard the skin.
Using the back of a fork, mash garlic with ½ teaspoon salt and ¼ teaspoon pepper.
½ teaspoon kosher salt, ¼ teaspoon black pepper
Add 1 stick of softened butter and mix until combined.
4 oz. butter
Optional - Add 1 Tbsp. parsley and stir to combine.
1 Tablespoon parsley
Roll into a log using plastic wrap or store in air tight container and refrigerate until ready to use.