Heat olive oil in a large skillet over medium heat.
Add minced garlic and diced onion, sauté until softened.
Add diced eggplant, zucchini, bell peppers, and tomatoes to the skillet.
Stir in dried thyme, dried oregano, salt, and pepper.
Cook uncovered, stirring occasionally, until vegetables are tender, about 20-25 minutes.
Garnish with fresh basil leaves before serving.