Puy lentil, spiced roast carrot & feta salad

INGREDIENTS

• 2 tbsp olive oil
• 1 tbsp cumin seeds
• 500g carrots , peeled, halved and cut into batons
• 1 tbsp clear honey
• 250g pouch cooked Puy lentils (or canned, drained and rinsed)
• 1 red onion , finely sliced
• ½ lemon , juiced
• large handful mint leaves, roughly chopped
• 100g lamb's lettuces
• 85g feta cheese , crumbled