Chicken & white bean stew

INGREDIENTS

• 2 tbsp sunflower oil
• 400g boneless, skinless chicken thighs , trimmed and cut into chunks
• 1 onion , finely chopped
• 3 carrots , finely chopped
• 3 celery sticks, finely chopped
• 2 thyme sprigs or ½ tsp dried
• 1 bay leaf , fresh or dried
• 600ml vegetable or chicken stock
• 2 x 400g / 14oz cans haricot beans , drained
• chopped parsley , to serve