1. Peel and dice the potatoes into ¾-inch cubes. Soak them in cold water for 10–15 minutes, then pat dry.

2. Cut steak into 1-inch cubes and pat dry.

3. In a bowl, toss the steak with olive oil, garlic powder, onion powder, smoked paprika, salt, pepper, and crushed red pepper.

4. In another bowl, toss the dried potatoes with olive oil, salt, pepper, and optional rosemary or seasoning.

5. Preheat air fryer to 400°F (200°C) for 3–5 minutes.

6. Add potatoes to air fryer basket in a single layer. Cook for 10–12 minutes, shaking halfway.

7. Add steak bites to the basket and cook for another 6–8 minutes, shaking or flipping once.

8. While everything cooks, melt butter in a small saucepan over low heat. Add minced garlic and cook for 1–2 minutes until fragrant.

9. Stir in parsley and lemon juice (if using), then remove from heat.

10. Toss cooked steak and potatoes in garlic butter. Garnish with extra parsley or Parmesan if desired. Serve hot.