Simple Ratatouille Recipe (a French Classic)

Name: Simple Ratatouille Recipe (a French Classic)
Prep time: 12 min
Cook time: 35 min
Total time: 47 min
Cuisine: French
Ingredients: 3 tbsp extra virgin olive oil; 1 large onion (chopped); 3 large garlic cloves (crushed); 1 medium red bell pepper (deseeded and diced); 1 medium green bell pepper (deseeded and diced); 1 medium yellow or orange bell pepper (deseeded and diced); 1 large aubergine (diced); 2 medium courgettes (sliced into half-moon shapes); 400 g / 14 oz can Italian chopped tomatoes; 2 heaped tbsp Italian tomato puree; 1 tsp Herbes de Provence/Italian mixed herbs; 120 ml / 4 fl oz water; Sea salt and freshly ground pepper; Parmesan cheese shavings (optional); Fresh basil leaves (optional)