Plan ahead:
1. This dish can be served hot, or you can serve it cold or at room temperature as a salad.
2. This can be reheated in the oven, loosely covered, until heated through.
3. To prepare this fresh on Yom Tov, sauté the onion, garlic, salt, and pepper in half of the oil. After about 5 minutes, add remaining ingredients and cook, stirring occasionally, until cooked through.