Courgette and Chimichurri Salad

Ingredients

• 40g walnuts
• 150g green beans, blanched and cooled
• 15g coriander, finely chopped
• 15g flat-leaf parsley, finely chopped
• 2 cloves garlic, crushed
• 1 long shallot, finely chopped
• ½ red chilli, finely chopped (optional)
• 2 tbsp red wine vinegar
• 2 tbsp olive oil
• 2 small courgettes
• 20g feta , crumbled