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    Home » Recipes » Gluten-Free Recipes

    Zucchini Tomato Casserole

    Published: Aug 8, 2016 · Modified: Jul 6, 2022 by Sally Cameron · This post may contain affiliate links · 4 Comments

    210 shares
    ↓ Jump to Recipe

    Here's a way to use summer's bounty of tomatoes and zucchini. Add this to your zucchini casserole recipes file. Layers of red ripe tomatoes and zucchini baked with a vegan cheese herb topping; the best of summer vegetables all in one dish. Tomato and zucchini casserole is a great summer side dish. And it's dairy-free, gluten-free and grain-free. If you enjoy dairy, finish it with fresh grated Parmesan.

    tomato zucchini casserole | AFoodCentricLife.com
    Tomato and zucchini casserole in a white oval baking dish.

    Tomato and Zucchini Casserole

    Looking for zucchini and tomato recipes? Try this one. Summer markets are overflowing with beautiful tomatoes, zucchini, and fresh herbs, so turn them into a casserole. It's sort of a traditional summer French dish called a vegetable gratin, which is a fancy name for a casserole. 

    Many casseroles use cheese for richness and breadcrumbs for a crisp topping. This version is lighter and cleaner without cheese or breadcrumbs, yet still a crisp top and a cheesy taste. How? Using Vegan Cheese Powder.

    Dairy-Free Vegan Cheese Powder

    Vegan cheese powder is made with raw cashews, nutritional yeast, granulated garlic and sea salt. If you are not familiar with the wonderful cheesy flavor of nutritional yeast, read this post for more information. You can make a batch in a minute in a food processor. It provides a cheesy taste with no cheese, a nice alternative for dairy-sensitive or paleo diners.

    tomato zucchini casserole | AFoodCentricLife.com
    Tomato and zucchini casserole ready to bake.

    Zucchini Casserole Ingredient Notes

    For the casserole I use Roma tomatoes and green zucchini. Yellow zucchini is nice for added color if you can find it. Choose tomatoes and zucchini that are about the same diameter. When you slice and layer them the casserole looks nice and layers more easily. If they aren't quite even, it still works. You will need lots of fresh thyme, olive oil, garlic and a large shallot. If you don't have any shallot, use a little thinly sliced onion.

    tomato zucchini casserole | AFoodCentricLife.com
    Layering sliced tomatoes and zucchini in a baking dish.

    How to Assemble the Casserole

    Use either an oval casserole baking dish called a gratin, oval roaster, or a rectangular baking dish. Use a 4 quart size. The dish in the photo is approximately 13" long, 10" wide and 2 ½ " deep. For a rectangular casserole, arrange the vegetables in rows rather than an oval.

    Slice the tomatoes and zucchini crosswise into about ¼" thick circles. Sauté shallot and garlic in olive oil until soft and place it in the bottom of the casserole, then top with overlapping layers of tomatoes and zucchini. Pack the slices fairly tight as they shrink during baking. Sprinkle the topping over the top and bake uncovered until golden, about 35-45 minutes. Serve to the happy smiles of your family.

    tomato zucchini casserole | AFoodCentricLife.com
    Tomato and zucchini casserole out of the oven with a crisp top.

    Another idea for summer tomatoes is tomato gazpacho soup. It's cool, refreshing and delicious!

    📖 Recipe

    tomato zucchini casserole | AFoodCentricLife.com

    Zucchini Tomato Casserole

    Sally Cameron
    Layers of sliced tomatoes and zucchini baked into a casserole with a dairy-free, grain-free, gluten-free cheesy tasting herb topping. If you enjoy dairy, finish the top with grated Parmesan.
    5 from 1 vote
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    Prep Time 10 minutes mins
    Cook Time 43 minutes mins
    Total Time 53 minutes mins
    Course Side Dish, vegetables
    Cuisine American
    Servings 4 to 6 servings
    Calories 140 kcal

    Equipment

    • casserole baking dish

    Ingredients
      

    • 6 Roma tomatoes about 1 ¼ pounds
    • 3 zucchini about ¾ - 1 pound
    • 2 shallots ¾ cup sliced shallot
    • 3 large garlic cloves finely chopped
    • 3 tablespoons dairy free cheesy sprinkle click recipe link
    • 1 ½ tablespoons fresh chopped thyme leaves half a bunch
    • ⅛ teaspoon sea salt
    • ⅛ teaspoon ground black pepper
    • 2 tablespoons extra virgin olive oil divided use

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    Instructions
     

    • Pre-heat an oven to 375° degrees. Slice tomatoes and zucchini crosswise into approximately ¼" slices.
    • Add 1 tablespoon of olive oil to a small pan and heat oil over medium low heat. Add the shallot and cook until soft, about 2-3 minutes. Add garlic and cook another 30-60 seconds. Spread the soft shallots and garlic into the bottom of a 4 quart oval casserole.
    • Layer the tomato and zucchini slices alternately around the dish, starting at the outside and working in, overlapping tightly. Get as much as you can into the dish. You may not use quite all of the slices. Sprinkle with the salt and pepper.
    • Combine the dairy-free cheesy sprinkle with the chopped thyme leaves then sprinkle over the top of the casserole. Drizzle with the last tablespoon of the olive oil.
    • Bake casserole until top is golden and crisp, about 35-45 minutes. Timing will depend on your ovens. Serve warm.

    Notes

    Full nutritional values for the Vegan Cheese Powder see this link https://afoodcentriclife.com/dairy-free-cheesy-sprinkle-2/
     
     

    Nutrition

    Calories: 140kcalCarbohydrates: 14gProtein: 6gFat: 8gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gSodium: 91mgPotassium: 784mgFiber: 5gSugar: 7gVitamin A: 1194IUVitamin C: 45mgCalcium: 53mgIron: 2mg
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    « Gazpacho Soup (gluten-free)
    Corn and Potato Chowder (dairy-free) »
    210 shares

    Comments

    1. Debbie in Alaska says

      May 17, 2018 at 11:51 am

      Do you think you could do this in a crockpot???

      Reply
      • Sally Cameron says

        May 23, 2018 at 12:24 pm

        Hi Debbie. I don't think a crock pot would work. This is an oven kind of recipe.

        Reply
    2. Denise says

      August 09, 2016 at 10:49 pm

      Perfect! It looks delicious! I am testing different yeast powder for a best taste. I bought one that I didn't like at all. It smells bad! What brand are you using?

      Reply
      • Sally Cameron says

        August 10, 2016 at 1:14 pm

        Hi Denise. I bought it on Amazon, Sari Foods. Non-GMO, no synthetic vitamins, organic, really good. Think I put the link in the post. I will check the post right now for the cheesy sprinkle...

        Reply
    5 from 1 vote (1 rating without comment)

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    Chef Sally Cameron of aFoodcentricLife.com in her kitchen.

    Welcome! I'm Sally, a professionally trained chef, former personal chef and caterer, lover of fresh healthy food, and sharing it with others.

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