Fragrant courgette & prawn curry

INGREDIENTS

• 2 tbsp sunflower oil
• 500g courgettes , thickly sliced
• ½ tsp cumin seeds
• 2 tbsp ginger , finely chopped
• 6 garlic cloves , crushed
• 1 red chilli , deseeded and finely chopped
• 1 tsp ground coriander
• ¼ tsp ground turmeric
• 500g tomatoes , chopped
• 150ml hot vegetable stock
• 225g pack raw peeled frozen jumbo prawns , thawed
• ½ small bunch coriander , roughly chopped