This is the best layered vegetable side dish! Thinly sliced juicy, acidic tomatoes are alternated between finely sliced zucchini and smothered in a fresh garlic, olive oil, and onion sauce. Baked to perfection, this summer dish is aromatic, herbaceous, and vibrant with color. If could only get better, it would be that the whole dish takes under 30 minutes to complete and is incredibly low in calories. Serve yourself a large portion of this vitamin rich, savory side.