Baked Tomatoes, Squash and Potatoes
- Heat oven to 375 degrees. Heat oil over medium and cook onion until tender and lightly golden, 6 to 8 minutes.
- Arrange the onion on the bottom of a 9-by-13-inch baking dish. Overlap tomato, squash, and potato on top of the onion. Season with salt and pepper, sprinkle with thyme and Parmesan, and drizzle with more oil.
- Bake covered for 30 minutes. Uncover and bake until golden, 30 minutes more.