Ratatouille is a famous French vegetable casserole that usually consists of tomatoes, onions, peppers, garlic, courgettes, aubergines, and herbs. It's popular all along the Mediterranean coast, but it originated in Nice and is commonly called ratatouille niçoise. There are hundreds of ways to cook this dish, and no one can tell which is the most traditional but the most popular is to sauté the vegetables separately and then layer them into a baking dish and bake. The ratatouille can be served on its own with a piece of bread, as a side dish with meat, as a filling of an omelette, or with savory crêpes. You can eat it for breakfast, lunch, or dinner. In any way, it's a delicious and light summer dish and a true taste of Provence.