Tomato Zucchini Casserole

Step 1
Preheat the oven to 375 degrees F (190 degrees C). Lightly butter a 9×9-inch pan.

Step 2
Combine Cheddar, Parmesan, garlic, oregano, and basil in a large bowl. Season with salt and pepper, and set aside.

Step 3
Arrange 1/2 of the zucchini slices in the pan. Sprinkle 1/4 of the cheese and herb mixture on top. Arrange 1/2 of the tomatoes and top with another 1/4 of the cheese mixture. Repeat layers.

Step 4
Melt butter in a skillet over medium heat. Stir in onions and cook until soft and translucent. Stir in bread crumbs; cook until they have absorbed the butter. Sprinkle on top of casserole.

Step 5
Cover loosely with foil and bake in the preheated oven for 25 minutes. Remove foil and bake until the top is crusty and vegetables are tender, about 20 minutes.