Squash Potato Tomato Gratin

• 1 zucchini
• 1 yellow squash
• 2 tomatoes
• 4 or 5 red potatoes
• 1/2 onion
• 1/4 C each of parmesan and mozzarella cheese (optional)
• 1 TB olive oil
• Salt and pepper
• thyme
• oregano

Directions:

• Preheat oven to 400
• Slice vegetables as thin as you can and arrange all but onions in a baking dish
• top with onions
• drizzle with olive oil and season to taste
• bake for 30 minutes or until edges start to brown
• top with cheese and bake another 10-15 minutes, until cheese is melty