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17 Easy Vegetarian Casserole Dishes

June 15, 2020 8 min read

17 Easy Vegetarian Casserole Dishes

If you're looking for healthy, delicious, one-pot meals that are easy to prepare, then we've got vegetarian casserole dishes full of inspiration for you!

Meatless meals are all the rage right now, and these vegetarian casseroles are bursting with color, flavor, and nutrients. We've got all the best veggies covered, from black and green beans to yellow squash and zucchini. All you need is a cast iron casserole dish to get cooking.

Here are our all-time favorite vegetarian casserole ideas!

1. Veggie breakfast casserole

Start your day as you mean it to go on, with a deliciously simple veggie breakfast casserole. Okay, so this one is packed full of eggs and cheese, so it's not a recipe for vegans, but it is perfect for vegetarians that love to power up for the day.

Scramble up your eggs in a mixing bowl with sour cream, grated cheese, and a dash of milk. Mix in some seasoning, and then mix in all of your sauteed veggies. You can pick everything from mushrooms, onions, and bell peppers, to peas, zucchini, and broccoli!

You can use our breakfast casserole recipe, just take out the sausages and throw in a few more greens.

2. Corn casserole

For a classic vegetarian bake, why not try our 3 step recipe for corn casseroles? This traditional side dish is welcome at any time of the year, but you'll know it best from those Thanksgiving meals!

The 3 simple steps to the recipe: stir it, bake it, eat it!

It's that easy. Take butter, eggs, corn, sour cream, and a little seasoning. Stir it all together, bake it in the oven, and then eat it. It's a simple recipe that takes little practice, zero patience, and delivers a delicious dish in no time at all.

3. Broccoli casserole

Our super-easy to cook broccoli casserole is one of our favorite vegetarian bakes. This great broccoli recipe uses up all the broccoli in your cupboards or freezer. You can use fresh or frozen broccoli, it doesn't matter, it can all go in the pan!

Simply chop up all your broccoli into small chunks and pieces, mix up eggs, mayonnaise, and a can of mushroom soup, and then pour everything into your casserole dish. Add a bit of seasoning and a few spices (we love using paprika in this recipe), then throw in the secret ingredient.

Actually, the secret ingredient really isn't that secret. It's just cheese. Lots and lots of cheese!

4. Black bean casserole

Black bean casserole is easily one of the best vegetarian casserole recipes you can cook up in the kitchen. A black bean casserole adds a touch of Mexican spice and flavors to your weekday meal, and it's surprisingly easy to prepare too.

Take a can of black beans, mix the beans together with cilantro, chili, peppers, and onions, then bake it all in the oven in a casserole dish that's swimming in fiery enchilada sauce. You can serve it up with fresh corn tortillas if you want to add another layer of authenticity to this fantastic recipe.

5. Green bean casserole

If a Mexican-style black bean casserole is a little too fiery for your liking, why not indulge in a toned-down but equally delicious green bean casserole?

Our recipe is simple. Take a whole heap of green beans, trim down the ends, and mix them together with a green bean casserole sauce. This makes for a tremendous one-pot side dish that's wonderfully fresh and summery. We love serving it up with a huge portion of cheesy mashed potato or something equally as creamy.

Alternatively, you can add a few more vegetables (broccoli or cauliflower, for instance) to cook up a larger casserole that works as a main meal, rather than just as a side dish.

6. Squash casserole

When summer arrives, you can't beat cooking up a classic southern-style casserole to use up all that squash that's growing in the garden. Squash casseroles are hearty and healthy, but if you want, they can be oozing with cheese and cream too.

This great casserole works well as a side dish, and you can serve it up to your vegetarian and meat-eating friends at the same time. It works great for summer parties and barbecues. Yellow squash is a firm favorite for this recipe, but green zucchinis bring just as much flavor to the table.

7. Pineapple casserole

Not all casserole recipes have to be savory, because one of our more unique recipes call for lots of pineapples instead of vegetables. It might sound strange, but pineapple casseroles have long been a firm staple in many Southern states.

Our pineapple casseroles are mostly sweet, but you can make them savory too. Our recipe calls for plenty of pineapples (of course) but just as much cheese and sauce to go with the sweet fruit. You can find out more by reading through our dedicated pineapple casseroles recipe!

8. Cauliflower casserole

If you prefer your casserole recipe to have more of a classic appeal to it, then traditional cauliflower casseroles could be the vegetarian dishes that you're looking for.

Cauliflower casseroles are great because they are wonderfully low carb. They make for a delicious and healthy side dish, or you can even serve it up as main. If you want to keep your cauliflower casseroles super healthy, then be sparing on the cheese sauce. If you're not so worried, then you can make up for the lack of carb calories by layering on layer after layer of grated cheese!

9. Chili relleno casserole

We've had a few Mexican inspired vegetarian casserole recipes so far, but nothing beats delicious chili relleno casseroles. This casserole isn't quite as simple to make as some of our other veggie suggestions, and it takes a little prep time, but it's well worth the extra effort.

Our chili relleno casseroles are really cheesy and filled with spicy chilis. In fact, the chilis are stuffed with cheese, which we think is a beautiful combination! You can make it even spicier by pouring in lots of hot sauce to the mix before baking it.

Try your hand at this excellent Mexican casserole dish by having a look through our dedicated recipe for this fiery dish!

10. Zucchini casserole

Zucchinis are fantastically popular in summer when supermarket and vegetable gardens seem to be overflowing with this bright green squash!

Zucchini is so versatile (you can even use spiralized zucchini as a pasta substitute for low carb meals!), so it's impossible to not find a way to use it in a casserole. There are so many options when it comes to a zucchini casserole, but we recommend baking a zucchini gratin casserole.

You'll need a creamy, cheese sauce, lots of sliced zucchinis, and a breadcrumb topping to finish it all off. It's a great side, but it works well as a main dish, too, if you're looking for a one-pot veggie casserole to serve at dinner.

11. Potato casserole

Okay, so we can't write an article on the best vegetable casseroles and not include a potato casserole! Don't worry, because we've got your potato cravings covered with our delicious twice baked potato casserole.

That's right, it's so good you need to bake it twice. First, you bake your potatoes in the oven. Then you mash them up, make a casserole, and bake them again. It's deliciously creamy, and you can add in as much cheese as you want too.

Our traditional potato casserole recipe calls for bacon on the top, but for vegetarian purposes, just ignore that completely.

12. Sweet potato casserole

As well as regular potato casseroles, one of the best vegetable casseroles you can quickly cook up is a sweet potato casserole.

We love how fresh and simple a sweet potato casserole is (plus, there's none of that carb eating guilt you get when you're chomping on potato casseroles!). Sweet potatoes can add a new and diverse dimension to your cooking, and we highly recommend starting to cook with them in your kitchen.

You can make your sweet potato casserole cheesy, or you can keep it healthier by skipping out on the grated cheddar. You can serve sweet potato casseroles up as a side dish or as a main dish. A sweet potato casserole is great in winter and even better in the summer!

13. Veggie lasagna

A veggie lasagna is the ultimate veggie casserole, offering you a totally vegetarian version of this timeless, classic dish. Let's face it, lasagna is always a hit, but just because you're vegetarian doesn't mean you have to miss out on it.

You don't need ground beef to make this taste good, but if you want a meat-free alternative, you can opt for Quorn mince or a similar substitute. Alternatively, a veggie lasagna is just as good if you add in lots more vegetables. Onions, mushrooms, peppers, and zucchinis are just a few of the vegetables that work really well in a vegetable lasagna.

14. Veggie moussaka

You can take your casserole preparation to another level by cooking up a delicious Mediterranean inspired veggie moussaka. In principle, it's sort of like veggie lasagna, except instead of pasta, you've got delicious layers of eggplants.

Just like veggie lasagna, your veggie moussaka can make use of a fantastic array of different vegetables too, in summer or winter. You can throw in mushrooms, peppers, onions, tomatoes, potatoes, and much more. Just don't forget the all-important ingredient that makes moussaka, moussaka. Don't forget the eggplant!

15. Veggie pasta bake

Pasta bakes are another timeless dish that every chef knows how to whip up quickly. They're perfect for using up all those ingredients lying around your cupboard and kitchen, from pasta to canned corn kernels.

Veggie pasta bakes are an excellent way to be creative, and there's no one set recipe for them. Semi-cook your pasta, prepare all the vegetables you have lying around, and throw them all together in a dish with a creamy, cheesy sauce or a rich tomato sauce.

Put your veggie pasta bake in the oven and layer it with grated cheese if you want to be a little more decadent with your cooking. This one's a crowd-pleaser, and it's very difficult to get a pasta bake wrong because anything goes!

16. Veggie pot pie

Another great one-pot recipe to cook up is a fabulous veggie pot pie. This is great if you love a good pastry covering, and it's surprisingly easy to prepare.

For simplicity, you can buy a pre-made pastry, but you can whip up your own if you know how to; it just takes a little longer, of course. Prepare your vegetables (again, anything lying around works well), and choose your sauce. We like a creamy mushroom pie filling, but we're open to ideas!

17. Vegetable casserole

So all of our recipes so far have been vegetarian casseroles, of course, but our final veggie casserole idea could be the best. Our vegetable casserole uses all the vegetables you have lying around. And by all, we mean ALL.

This is where you can get creative. Use up all those leftovers and throw them into the baking dish. This is one of those really easy vegetarian recipes that literally just need as many vegetables as you have in the kitchen.

You can use frozen or fresh vegetables, zucchinis or yellow squash, broccoli or cauliflower, cheddar cheese or Monterrey Jack. Mix up a cheesy casserole sauce and get baking to create the ultimate vegetarian main dishes.

That's it for our top vegetarian casserole recipes. We know there are so many different recipes and variations, and it was a hard time picking the best for this article! Whatever you choose to make, your sure to find a winner on this list!

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