Spicy Harissa Butter Beans with Peppers & Olives - Ainsley Harriott

Ingredients

• 1 tbsp olive oil
• 1 onion, peeled and chopped
• 1 red pepper, deseeded and sliced
• 1 green pepper, deseeded and sliced
• 1 x 400g tin of butterbeans, rinsed and drained
• 3 tomatoes, deseeded and chopped
• 1 x Ainsley North African Spicy Harissa Flavour Bomb*
• handful of pitted black olives
• crumbled (vegan) feta, to serve (optional)