Onion and Tomato Casserole with Whole Roasted Garlic

Have you every been in the mood for a thick, luscious tomato sauce? Something that’s been simmering on the stove for hours and hours, filling the house with aromas that call your entire family to the table? Well, this will get you those wonderful flavours in a fraction of the time.Onion and Tomato

Sliced onions and tomatoes baked in the oven until they break down into a gorgeous golden and cherry red mess. But don’t let the appearance fool you. They taste rich and satisfying especially when piled onto a thick slice of crusty Italian bread.

Just to bump it up a notch, I like to roast whole heads of garlic in the oven to spread over the bread.

Onion and Tomato Casserole
Adapted from Martha Stewart – Everyday Food, May 2011
  • 4 large tomatoes (about 2 pounds), cut crosswise into 1/2-inch slices (or I sometimes use cherry tomatoes)
  • 1 large or 2 medium yellow onions (about 1 pound), cut crosswise into 1/4-inch rounds
  • 2 tablespoons extra-virgin olive oil
  • Coarse salt and ground pepper


Preheat oven to 400 degrees. In a 9-by-13-inch baking dish, arrange tomatoes and onions in rows, overlapping slightly. Drizzle with oil and season with salt and pepper. Bake until tomatoes are lightly browned and onions are tender, about 45 minutes.
Combine breadcrumbs, parmesan cheese and olive oil and sprinkle the topping over the casserole. Bake for another five minutes or until topping is golden.
Serve warm or at room temperature.
Whole Roasted Garlic

Garlic Source The Food Network, 2006, Ellie Krieger


  • 1 head garlic
  • 1 tablespoon olive oil

Preheat the oven to 375 degrees F.
Cut the top third of the garlic head off so that the tops of the cloves are exposed. Place the garlic head, unpeeled, into a small ovenproof dish and drizzle with the oil, salt and pepper.
Cover with foil and bake for 30 minutes. Uncover and bake for 30 to 40 minutes more, until garlic is soft and golden brown.
Serve with toasted Italian bread.


20 thoughts on “Onion and Tomato Casserole with Whole Roasted Garlic

  1. I love any dish that cuts cooking time and this sounds fantastic, There is nothing like the smell of tomato sauce cooking, you are so right. I can just imagine how it tastes with the bread and roasted garlic.

  2. This sounds very interesting and delicious and I love recipes that are straight foward and easy to make. Thanks for liking my posts, I always appreciate your visits to my blog1

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