Created by Lynn (diner524) on July 6, 2016
Step 1: Place the yellow squash, zucchini, tomato, olives and onion on a double thickness of heavy-duty foil (about 17x18 in.). Combine the oil, lemon juice, garlic salt, oregano and pepper; drizzle over vegetables. Fold foil around mixture and seal tightly.
Step 2: Grill, covered, over medium heat for 30-35 minutes or until vegetables are tender. Open foil carefully to allow steam to escape.
Step 3: Transfer vegetables to a serving bowl. Sprinkle with cheese.