Giant butter bean stew

Name: Giant butter bean stew
Prep time: 30 min
Cook time: 1 h 15 min
Total time: 1 h 45 min
Cuisine: European, Mediterranean, Greek
Ingredients: 4 x 235g cans butter beans or 500g dried butter beans (cook according to pack instructions); 100ml Greek extra virgin olive oil; 3 small red onions, finely sliced; 2 large carrots, finely sliced; 3 celery stalks with leaves, finely chopped; 4 sundried tomatoes, sliced; 1kg ripe tomatoes, skinned, deseeded and finely chopped; 4 garlic cloves, chopped; 1 tsp paprika; 1 tsp ground cinnamon; 2 tbsp tomato purée; 1 tsp sugar; small pack flat-leaf parsley, finely chopped; small pack dill, finely chopped; 100g feta (optional), crumbled