Steak, roasted pepper & pearl barley salad - Good Food Middle East

Ingredients

• 85g pearl barley, rinsed
• 1 red pepper, deseeded and cut into strips
• 1 yellow pepper, deseeded and cut into strips
• 1 red onion, cut into 8 wedges, leaving root intact
• 1 tbsp olive oil, plus a little extra
• 1 large lean steak, around 300g, trimmed of any excess fat
• ½ x 100g bag watercress, roughly chopped
• juice ½ lemon, plus wedges to serve (optional)