Tuna and Bean Couscous Cakes - Ainsley Harriott

Ingredients

• 1 x packet Ainsley Harriott Couscous
• 1 x 400g tin of white beans (cannelloni, butter beans or haricot)
• 1 small red onion
• 1 clove of garlic
• Small handful of fresh parsley
• 1 x 145g tin tuna
• Salt and pepper
• 50g frozen sweetcorn
• Cooking spray
• To serve, yoghurt and herb dip or tartar sauce