This casserole can be a vegetarian main dish or a hearty side dish to serve with meat loaf.

• Preheat oven to 325°F. Spray 3-quart baking dish with nonstick cooking spray and set aside.

• In a large skillet, heat oil and the butter over medium heat. Add onions and garlic and sauté for 1 minute. Cover skillet, reduce heat to low, and cook until onions are translucent, about 5 minutes. Remove from heat and add tomatoes, salt, pepper, parsley, basil, and oregano. Mix well.

• Spread one-third of the onion mixture in a prepared dish. Arrange half of the sliced potatoes on top, then sprinkle with half of the cheese. Repeat layers, then top with remaining onion mixture. Cover tightly

• Bake for 70 to 80 minutes. Uncover dish and continue baking until potatoes are tender and cheese browns, about 20 to 30 minutes. Serve immediately.