Italian meatball stew

Name: Italian meatball stew
Cook time: 45 min
Total time: 45 min
Cuisine: Italian
Ingredients: 12 beef meatball; 2 tsp oil; 1 onion (diced); 2 carrot (diced); 2 garlic (crushed); 1 tbsp flour; 1 tbsp tomato purée; 3 tbsp pesto; 1 glass red wine (optional); 300 ml beef stock; 1 tin Chopped tomatoes (with herbs); 1 tin butter beans (drained); 2 handful sweetcorn (frozen or tinned); 0.5 pack parsley (fresh, roughly chopped)