19 Cozy Low-Carb Vegetarian Casserole Recipes (2024)

Stop your search for the next best collection of veggie-packed recipes, because you’ve found it here with these casseroles. Featuring delicious and healthy vegetables like broccoli, cabbage and zucchini, these dishes make great side dishes to add to any meal. Plus, they’re low in carbs with less than 15 grams per serving, while boasting lots of flavor from delicious vegetarian ingredients like cheese, eggs and seeds. Pair recipes like our Asparagus Casserole with your favorite protein-packed grains at dinnertime for something satisfying and tasty. Or try our savory Zucchini, Corn & Egg Casserole at your next brunch date, and everyone will be sure to love it.

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Asparagus Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (1)

Blanching the asparagus before assembling this casserole helps to maintain its vibrant green color. This asparagus casserole is perfect for the holidays or a weeknight dinner.

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Creamy Cabbage Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (2)

This creamy cabbage casserole is subtly spicy and has the perfect balance of sweet, tender cabbage to classic, creamy béchamel sauce. The cracker and cheese toppingaddsa nice bit of crunch in every bite. Serve alongside roasted chicken or pork.

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Tomato Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (3)

Cook and activist Mable Clarke serves this craveable side dish at the monthly fish fry she started to save the Soapstone Baptist Church in South Carolina. While the cheese crackers may draw you in, it's the baked tomatoes that keep you coming back for more. When she's cooking for hundreds of guests at the fish fry, Clarke uses canned tomatoes and green chiles for this dish. Since you're likely not cooking for 400, we adapted the recipe to use fresh tomatoes.

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Zucchini, Corn & Egg Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (4)

This healthy casserole is essentially a crustless quiche, brimming with fresh summer vegetables. Bake it up for an elegant summer brunch or a casual backyard barbecue.

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Broccoli Casserole with Sun-Dried Tomato Cream Sauce

19 Cozy Low-Carb Vegetarian Casserole Recipes (5)

Sun-dried tomatoes pull double duty in this flavorful casserole: the oil is used to sauté the onion and garlic while the tomatoes are added to the sauce. The creamy sauce tops broccoli for a cheesy side dish that all will love.

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Cheesy Spinach & Mushroom Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (6)

Both homey and healthful, this cheesy dream of a casserole is loaded with nutrients from spinach, and super savory and lip-smack-y from all the sautéed mushrooms. Any 'shroom will do, so pick your fave.

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Caprese Zucchini Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (7)

A summertime favorite—zucchini casserole—gets an Italian spin in this delicious and healthy side dish with tomatoes, mozzarella and basil. You can use zucchini or summer squash in this caprese-style casserole, or a combination of the two. A sprinkling of fresh basil and a drizzle of balsamic vinegar just before serving brightens up the flavors. Serve with grilled or roasted chicken and some quinoa, rice or couscous to soak up the juices from the casserole for a satisfying and easy dinner.

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Zucchini Gratin

19 Cozy Low-Carb Vegetarian Casserole Recipes (8)

This delicious zucchini gratin recipe has a delectable crispy Parmesan and breadcrumb topping and is made without any butter or cream, allowing the fresh zucchini flavor to shine. Slice the zucchini uniformly to ensure even cooking.

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Cauliflower Casserole with Everything Bagel Seasoning

19 Cozy Low-Carb Vegetarian Casserole Recipes (9)

The cheesy-seedy crust that tops this healthy cauliflower casserole recipe evokes everything bagels. Serve for the holidays or as a hearty side dish with roast chicken.

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Zucchini Parmesan Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (10)

This is an excellent veggie side dish for summer, when zucchini are abundant. A topping of crunchy panko breadcrumbs contrasts with the delicate squash, and onion, garlic powder, Italian seasoning and crushed red pepper pack this casserole with flavor. Melty Parmesan cheese is in the mix to bring it all together. Affordable and easy to throw together with ingredients you likely already have on hand, this casserole is perfect for almost any indoor or outdoor summer spread.

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Summer Vegetable Tian

19 Cozy Low-Carb Vegetarian Casserole Recipes (11)

This pretty vegan layered casserole is so simple to make. Its only seasonings are salt and garlic-infused olive oil, which you make by sizzling a clove of garlic in olive oil for about a minute. This dish is lovely warm or room temperature. Serve with crusty bread as a vegetarian entree or alongside roasted meats as a side dish—don't forget a glass of chilled rosé.

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Low-Carb Broccoli & Cheddar Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (12)

This simple cheesy casserole is comforting while keeping the carbs in check. Serve it alongside roasted chicken or pork.

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Classic Zucchini Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (13)

This comforting zucchini casserole with buttery crackers and cheese is the perfect recipe for your bumper crop of zucchini. Fresh thyme is lightly floral while fresh ground pepper adds kick to this creamy summer casserole.

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Creamed Spinach Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (14)

This creamy spinach casserole recipe is a more sophisticated cousin to creamed spinach. It's perfect for weekend entertaining or as a holiday side dish.

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Steam-Baked Summer Squash

19 Cozy Low-Carb Vegetarian Casserole Recipes (15)

Mable Clarke, a South Carolina cook and activist, makes this summer squash recipe to serve at a monthly fish fry that helps support her community's Soapstone Baptist Church. This squash casserole gets its lusciousness from sealing the baking dish with foil. The squash steams in its own juices and mingles with melted butter for a velvety bite.

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Spiralized Zucchini & Summer Squash Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (16)

If you don't have a spiralizer to make this healthy zucchini noodle casserole (aka zoodles), use a vegetable peeler to make long thin strips of the squash and zucchini, stopping when you reach the seedy center. Just a few minutes under the broiler gives these ricotta-and-basil-filled nests a light golden top.

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Cheesy Mushroom Gratin

19 Cozy Low-Carb Vegetarian Casserole Recipes (17)

Earthy portobellos are roasted then smothered in cheese in this easy low-carb side dish. Enjoy this gratin alongside pork or steak, or add a salad and turn it into a delicious vegetarian dinner.

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Cheesy Squash Bake

19 Cozy Low-Carb Vegetarian Casserole Recipes (18)

Here's a terrific way to dress up the last of the season's summer squash. Reduced-fat cheddar cheese gives this side dish recipe plenty of flavor.

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Zucchini & Squash Casserole

19 Cozy Low-Carb Vegetarian Casserole Recipes (19)

Pesto adds fresh herbal flavor to this zucchini and squash casserole. This easy summer casserole is perfect for when you have a bounty of fresh garden zucchini and summer squash.

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