3 sm. zucchini
3 tomatoes, sliced thick
4 tbsp. butter
2 tbsp. Parmesan cheese
1 tsp. onion salt
1/4 tsp. basil
1 1/2 c. soft bread crumbs
1 tbsp. mustard

Thinly slice zucchini. Arrange in shallow 2-quart casserole. Top with 3 thickly sliced tomatoes. Melt 4 tablespoons butter. Combine 3 tablespoons butter, 2 tablespoons Parmesan, cheese, 1 teaspoon onion, salt, and 1/4 teaspoon basil. Cover and bake at 375 degrees for 20 minutes. Combine remaining butter with 1 1/2 cups soft bread crumbs and 1 tablespoon of mustard. Cook uncovered 15 minutes. Yield 4 servings.