Prepare the Steak: Begin by cutting the steak into bite-sized cubes, about 1-2 inches each. Use a sharp knife to ensure even pieces, which will help cook uniformly in the air fryer.
Season the Steak: In a large bowl, combine olive oil, garlic powder, onion powder, smoked paprika, salt, pepper, and thyme (if using). Toss the steak cubes in the seasoning mix, ensuring each piece is coated evenly.
Preheat the Air Fryer: Preheat your air fryer to 400°F (200°C) for 3-5 minutes. This ensures the steak bites cook evenly and get that crispy exterior.
Cook the Steak Bites: Place the seasoned steak cubes in the air fryer basket in a single layer, leaving some space between each piece for optimal air circulation. Cook at 400°F (200°C) for 10-12 minutes, shaking the basket halfway through to ensure even cooking.
Check for Doneness: After 10 minutes, check the steak for your desired doneness. For medium-rare, the internal temperature should be about 130°F (54°C), medium about 140°F (60°C), and well-done around 160°F (71°C). If you prefer a more done steak, cook for an additional 2-3 minutes.
Serve and Garnish: Once the steak bites are cooked to your liking, remove them from the air fryer and transfer them to a serving dish. Garnish with freshly chopped parsley for a burst of color and added freshness.