
Mix it all together. Preheat the oven to 425°F (220°C). In a large mixing bowl, combine the zucchini, yellow squash, bell peppers, tomatoes, and red onion. Drizzle with the olive oil and add the garlic, oregano, thyme, salt, and pepper. Toss until everything is evenly coated.
Roast the vegetables. Spread the vegetables onto a baking sheet. Roast for 25 to 30 minutes, or until the vegetables are tender and caramelized around the edges and the tomatoes are beginning to burst.
Serve. Enjoy these vegetables as a side dish alongside your favorite main dish or protein. If you'd like, you can sprinkle them with freshly chopped basil or parsley, top with crumbled feta or goat cheese, and/or add a light drizzle of my balsamic glaze.