Tomato zucchini casserole

Ingredients 1 1/2 cups grated Cheddar cheese 1/3 cup grated Parmesan cheese 1/2 teaspoon dried oregano 1/2 teaspoon dried basil 2 cloves garlic, minced salt and pepper to taste 2 medium zucchinis, thinly sliced 5 plum tomatoes, thinly sliced 1/4 cup butter 2 tablespoons finely chopped onion 3/4 cup fine bread crumbs Directions Preheat oven to 375 degrees F (190 degrees C). Lightly butter a 9x9-inch pan. In a large bowl, combine Cheddar, Parmesan, oregano, basil, and garlic. Season with salt and pepper, and set aside. Arrange half of the zucchini slices in the pan. Sprinkle 1/4 of the cheese and herb mixture on top. Arrange half of the tomatoes, and top with another 1/4 of the cheese mixture. Repeat layers. Melt butter in a skillet over medium heat. Stir in onions, and cook until soft and translucent. Stir in breadcrumbs; cook until they have absorbed the butter. Sprinkle on top of casserole. Cover loosely with foil, and bake in a preheated oven for 25 minutes. Remove foil, and bake until the top is crusty and the vegetables are tender, about 20 minutes.