Preheat the air fryer to 400 degrees.: When the air fryer is heating, you should hear the fan kick in and feel a warm pulse from the unit, which signals even hot air circulation. This high starting temperature is crucial for developing a quick sear and crust on the exterior of the steak , producing that caramelized, browned surface. If you skip preheating, the steak may cook more slowly and fail to brown properly. A common mistake is turning the steak into the basket too early, resulting in a pale, less appealing crust; wait until the unit registers the full temperature.
Mix garlic butter ingredients, make into a log and set aside in the fridge.: The texture of softened butter combined with minced garlic and fresh herbs should be smooth and slightly glossy when well mixed. After combining, rolling it into a log and chilling gives it structure so you can slice perfect rounds to melt onto the hot steak. This step matters because chilled butter melts gradually, coating the meat with a silky, flavorful sheen rather than running off immediately. If you rush and do not chill it, the butter may become greasy and not hold its shape, and sharp raw garlic can be overly pungent.
Prepare the steaks by rubbing olive oil on each side. Rub the salt and pepper on each side.: As you rub a thin layer of olive oil over the surface, you should feel the meat become glossy and slightly tacky, which helps seasonings adhere and promotes even browning. The oil encourages the Maillard reaction on the surface, creating those flavorful browned bits that taste deep and toasty. Apply just enough oil to coat the steak; too much oil can cause smoking, while too little will make seasoning fall off. A frequent error is using excess oil, which leads to a smoky cooking environment rather than a proper sear.
Add the steak to the air fryer basket and cook for 12 minutes, turning over after 6 minutes for medium. Let the steak rest for 10 minutes and top with garlic butter.: When you season, you will notice the coarse salt begin to draw a faint sheen from the surface, and the cracked black pepper adds texture. Seasoning right before cooking preserves surface moisture while ensuring bold flavor. This step is essential as salt enhances the beef flavor and pepper adds a sharp counterpoint. Avoid salting too early, which can prematurely draw juices out of the meat and change the texture.
Add the steak to the air fryer basket and cook for 12 minutes, turning over after 6 minutes for medium: As the steak hits the hot basket, listen for a subtle sizzle that indicates surface contact with the hot air flow; that sound is satisfying and reassuring. The first six minutes develop a seared crust on the first side, and flipping ensures even browning and temperature distribution for a reliable medium doneness. You should aim for a surface that is deeply browned but not charred, and the internal feel will move from soft to slightly springy as it cooks. A common mistake is opening the fryer too often to check, which drops temperature and interrupts searing.
Let the steak rest for 10 minutes and top with garlic butter: Resting is when the juices redistribute, and you will notice the meat firm up slightly and stop releasing large pools of juice. During this time the surface cools a touch, allowing the warm herb butter to melt slowly across the steak, coating it in an aromatic finish. This resting period is vital to a juicy final bite, so resist the urge to cut in immediately. Cutting too soon is a frequent error because it causes precious juices to spill onto the plate instead of staying in the meat.