Tomato Zucchini Casserole
["3 zucchini squash, sliced into diagonal rings", "1 large onion, sliced", "3 large tomatoes", "1 tsp. salt", "2 tsp. sweet basil", "1/4 c. Parmesan cheese", "1/4 c. butter or margarine"]
["Rub casserole with butter.", "Line dish with a layer of zucchini, onion and sliced tomatoes; top layer with 1/2 teaspoon salt, 1 teaspoon basil and 2 tablespoons cheese.", "Dot with butter. Repeat layers; top with remaining salt, basil and cheese.", "Bake, uncovered, at 375\u00b0 for 45 minutes."]
["zucchini", "onion", "tomatoes", "salt", "sweet basil", "Parmesan cheese", "butter"]