Preheat oven 375°F (191°F).

Use a deep dish pie plate or square baking pan, and cover the bottom with tomato sauce and chopped onion.

Begin layering the vegetables next to each other, alternating varieties, and overlapping.

If you use a deep dish pie plate, start from the outside and make a spiral of vegetables.

If you use a square baking pan, make rows instead.

You should be able to see the colorful edges of each vegetable.

Sprinkle evenly with garlic, dried herbs, and salt.

Drizzle with olive oil.

Cover with parchment paper (cut to the size of the dish) and aluminum foil.

Bake for approximately 45 minutes until vegetables are tender.