- In a large bowl, add steak, sea salt and freshly ground pepper to taste, oregano, 2 tablespoons olive oil and garlic. Stir to combine and marinate in the refrigerator for 20 minutes. 
- On an indoor grill over medium heat, grill steak 4 to 5  minutes each side until cooked through. 
- In a large bowl, add tomatoes, onion, cucumber, olives, capers, feta, red wine vinegar, basil and remaining olive oil. Stir to combine. 
- Slice steak and serve with salsa.