Steps
1. Preheat the oven to 375°F (190°C).
2. Slice the onions and tomatoes into rounds.
3. In a baking dish, layer the onions and tomatoes, alternating between the two.
4. Drizzle olive oil over the top and season with salt, pepper, oregano, and basil.
5. Sprinkle Parmesan cheese on top.
6. Bake in the preheated oven for 25-30 minutes or until the vegetables are tender and the cheese is golden.
7. Serve hot and enjoy!