2Preheat your oven to 375°F (190°C).
In a large skillet, heat the olive oil over medium heat.
Add the diced onion and minced garlic to the skillet and sauté until the onion is translucent, about 5 minutes.
Add the diced eggplant, zucchini, and bell peppers to the skillet. Cook for about 10 minutes, stirring occasionally, until the vegetables are tender.
Stir in the diced tomatoes, salt, black pepper, thyme, and basil. Cook for another 5 minutes.
Transfer the vegetable mixture to a baking dish and spread it out evenly.
Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
Remove the foil and bake for an additional 15 minutes, or until the vegetables are fully cooked and slightly caramelized.
Remove from the oven and let it cool for a few minutes before serving.
Serve warm as a main dish or a side dish. Enjoy your Classic Ratatouille!