Combine the basil, oil, oregano, pepper and salt; set aside. Place egg whites and bread crumbs in separate shallow bowls. Cut eggplant lengthwise into six slices. Dip slices in egg whites, then coat in crumbs.
Place on a baking sheet coated with cooking spray. Bake at 375° for 20-25 minutes or until tender and golden brown, turning once.
Cut each tomato into six slices; place two slices on each eggplant slice. Spoon reserved basil mixture over tomatoes and sprinkle with cheeses. Bake for 3-5 minutes or until cheese is melted.
Meanwhile, rub garlic over one side of each bread slice; discard garlic or save for another use. Place each eggplant stack on a slice of bread; top with remaining bread.
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