Chimichurri Beef and Fattoush Salad

• 500 g rump steak
• 3 wholemeal Lebanese bread (wraps)
• 1 bunch parsley
• 2 tbsp dried oregano
• 0.3 cup red wine vinegar
• 3 garlic cloves, crushed
• 0.5 cup extra virgin olive oil, plus extra to drizzle
• 600 g cherry tomatoes, chopped in halves/quarters
• 0.5 red onion, finely chopped
• 1 tbsp za'atar (optional)
• 1 red chilli, finely chopped (optional)