Mediterranean vegetable pasta

Name: Mediterranean vegetable pasta
Ingredients: 2 tbsp olive oil; 1 red onion, chopped; 1 medium aubergine, chopped into 1cm/½in cubes; 1 large (or 2 small) courgettes, chopped into 1cm/½in cubes; 1 red pepper, chopped; 3 garlic cloves, finely grated; 400g/14oz cherry tomatoes, halved; 1 tbsp tomato purée; 320g/11¼oz conchiglie (or other pasta); handful fresh basil; 1 ball mozzarella; salt and freshly ground black pepper; 1 tbsp extra virgin olive oil; 30g/1oz Parmesan (or vegetarian hard cheese), grated