Place a third of the tomato/onion mixture in a heavy Dutch oven or heavy casserole. Sprinkle with 1 tablespoon parsley. Arrange half of the eggplant and zucchini on top. Top with half of the remaining tomato mixture and parsley. Top with the remaining eggplant and zucchini slices. Finish with remaining tomato mixture and parsley.
Cover and simmer over low heat for 10 minutes. Uncover, tip casserole and baste with rendered juices. Adjust seasoning if necessary. Raise heat slightly. Cook, uncovered, until juices have evaporated, about 15 minutes. Stir often to keep vegetables from scorching on the bottom. Serve hot, at room temperature or cold.
Nutrition information per serving:
Calories125Fat10 gSodium302 mg
Carbohydrates8 gSaturated fat1 gCalcium21 mg
Protein1 gCholesterol0 mgDietary fiber2 g