Wild Rice and Vegetable Casserole

$6.93 recipe / $1.16 serving
by Beth Moncel
4.91 from 30 votes
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I’ve been making a lot of soups lately and not being very diligent about chopping and freezing my leftover vegetables, so I found myself this week with a refrigerator full of vegetables and wondering what to do with them. I also remembered that I had bought a wild rice mix from Aldi a few weeks back, so I decided to combine the vegetables with the cooked rice medley and some yummy creamy sauce to make a delicious Wild Rice and Vegetable Casserole. And OMG I can’t stop eating it!

Close up view of Wild Rice and Vegetable Casserole being scooped out of a dish.

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What Type of Rice Should I Use?

You can use any type of rice mix for this, just make sure you use 3.5-4 cups cooked rice. The rice mix that I had was a mix of wild rice, brown rice, white rice, and I think another variety. Buying a mix like this instead of straight wild rice will definitely be more cost effective. Stores like Aldi and Trader Joes usually have these rice mixes for a decent price and you may even be able to find something similar in the bulk bins at Whole Foods.

Topping Options

I topped my casserole with the leftover fried onions from my green bean casserole and they really took the dish up a level. If you don’t like fried onions, you could always make a tasty bread crumb topping by mixing seasoned bread crumbs, some grated Parmesan, and a little melted butter.

Wild Rice and Vegetable Casserole freshly baked in a casserole dish

Love casseroles? Try our Cheesy Chicken and Rice Casserole!

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Wild Rice and Vegetable Casserole

4.91 from 30 votes
Plenty of vegetables, a hearty wild rice blend, and a super creamy sauce make this Wild Rice and Vegetable Casserole a warm comforting dish for winter! 
Plenty of vegetables, a hearty wild rice blend, and a super creamy sauce make this Wild Rice and Vegetable Casserole a warm comforting dish for winter! BudgetBytes.com
Servings 6 about 1 cup each
Prep 10 minutes
Cook 50 minutes
Total 1 hour

Ingredients

  • 4 Tbsp butter ($0.52)
  • 1 onion ($0.28)
  • 2 cloves garlic ($0.16)
  • 2 carrots ($0.22)
  • 2 stalks celery ($0.37)
  • 8 oz. button mushrooms ($1.80)
  • 1/2 tsp salt ($0.02)
  • Freshly cracked pepper ($0.05)
  • 1/4 tsp dried thyme ($0.03)
  • 1/4 tsp dried sage ($0.03)
  • 4 Tbsp flour ($0.04)
  • 1 cup vegetable broth ($0.13)
  • 1 cup whole milk ($0.31)
  • salt, to taste ($0.02)
  • 4 cups COOKED wild rice blend ($1.20)
  • 3 oz. fried onions* ($1.75)
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Instructions 

  • Preheat the oven to 350ºF. Finely dice the onion and mince the garlic. Add the butter, onions, and garlic to a large pot and sauté over medium heat until the onions are soft and transparent.
  • While the onions and garlic are sautéing, Slice the carrots and dice the celery. Add the carrots and celery to the pot and continue to sauté.
  • While the carrots and celery are sautéing, wash and chop the mushrooms. Add the mushrooms to the pot along with the salt, pepper, thyme, and sage. Continue to sauté until the mushrooms have turned brown and completely wilted.
  • Add the flour to the pot and continue to stir and cook for about 2-3 minutes more, or until the flour coats the bottom of the pot and begins to turn a light golden color. Whisk in the vegetable broth, making sure all the flour dissolves from the bottom of the pot. The mixture should thicken fairly quickly.
  • Once thickened, whisk in the milk and allow it to come up to a simmer again. Once simmering, turn the heat off, taste, and add more salt or pepper if needed. You want the sauce to be slightly on the salty side so that the flavor doesn’t dilute too much once the rice is added.
  • Stir the cooked rice into the pot with the sauce and vegetables. Transfer everything to a 2 to 3 quart casserole dish and top with the fried onions. Bake the casserole in the preheated 350ºF oven for 25-30 minutes, or until the sauce is bubbling up around the edges and the fried onions have turned deep golden brown. Serve hot.

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Notes

*These are store bought fried onions, like these.

Nutrition

Serving: 1ServingCalories: 270.1kcalCarbohydrates: 37gProtein: 8.1gFat: 10.78gSodium: 578.23mgFiber: 4.03g
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How to Make Wild Rice Casserole – Step by Step Photos

Wild Rice Mix

This is the wild rice mix that I used. You can pretty much use any rice mix, just make sure you have somewhere between 3.5 and 4 cups cooked rice.

Sauté Onions and Garlic in Butter

Preheat the oven to 350ºF. Dice an onion and mince two cloves of garlic. Add the onion, garlic, and 4 Tbsp butter to a large pot and sauté over medium heat until the onions are soft and transparent.

Sauté Carrots and Celery

While the onions and garlic are sautéing, Slice two carrots and dice two stalks of celery. Add them to the pot and continue to sauté.

Sauté Mushrooms and Herbs

While the carrots and celery are sautéing, wash and chop 8oz. mushrooms. Add them to the pot along with 1/2 tsp salt, some freshly cracked pepper, 1/4 tsp dried thyme, and 1/4 tsp dried sage. Continue to sauté until the mushrooms have completely wilted and turned brown.

Add Flour to Vegetables

Add 4 Tbsp flour to the pot and continue to stir and cook until the flour coats the bottom of the pot and turns golden brown.

Whisk in Broth and Milk

Whisk in 1 cup vegetable broth until all of the flour is dissolved off the bottom of the pot. The broth should thicken very quickly in the hot pot. Once thickened, whisk in 1 cup whole milk and then allow the mixture to come up to a simmer again. Once it reaches a simmer, turn the heat off and add more salt and pepper if needed. You want it to be slightly on the salty side so there is enough salt to flavor everything after the rice is added.

Stir in Cooked Rice

Finally, stir in about 4 cups cooked wild rice medley. The amount of rice is a little flexible, so if you have a little less or a little more than 4 cups, you’ll be okay. 

Baked Wild Rice and Vegetable Casserole with crispy onions on top

Transfer the mixture to a 2-3 quart casserole dish and top with 3oz. fried onions (that’s half of a 6oz. container). Bake for 25-30 minutes, or until the sauce is bubbling up around the edges and the onions are golden brown. This photo is AFTER baking.

Close up of a scoopful of Wild Rice and Vegetable Casserole

😍 Seriously. I’m about to go dish out some more of this Wild Rice and Vegetable Casserole for lunch today! Leftovers reheat very well. 👍

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  1. Yum, this was very good and hearty. I used frozen peas and carrots for veg and onion powder instead of an onion (cuz that’s what I had on hand). It was easy to throw together and felt really satisfying to eat.

    1. I wanted to add that I used chayote (an onion-ish gourd that’s mild with a texture like jicama) in place of onions and it was delicious. Wanted to mention it in case anyone comes across it in a grocery store and wants to use it. It’s also called mirliton, chocho and a bunch of other names across the world.

  2. Is there a way to make this without flour? My MIL has Celiac’s and I’m trying to come up with things she can eat with us. Thanks!

    1. Hi Montgomery. You can leave the flour out, add the milk, and then add a slurry of cornstarch. Dissolve 2 tablespoons of cornstarch in about 1/4 cup of water. Add it to the milk and stir until it thickens. XOXO -Monti

    1. I would probably use frozen broccoli, since it’s already par-boiled, then chop it into smaller pieces and stir it in with the rice. If you want to use fresh broccoli, I would partially steam it, chop it into smaller pieces, then stir it in with the rice.

  3. I added canned chickpeas to make it a more full meal on its own, and left off the fried onions so it would heat up nicer for leftovers. I also just let it simmer covered on the stove rather than dirtying a big casserole dish and baking it in the oven. I loved the flavors, very hearty and perfect leftovers.

  4. What a great clean-out-the-fridge-and-pantry master recipe! Cooked grain of choice + vegetables of choice + dried herbs of choice + roux/white sauce + topping of choice. I made it pretty much as described, but also added some dried kale that I’m trying to use up. I don’t love the kale, but I’m too cheap to throw it out! It disappears nicely in this recipe.

  5. Pretty good! Basically tastes like a casserole version of wild rice soup. The fried onions on top definitely took it to the finish line, but they don’t hold up in the fridge so leftovers weren’t as good.

    BTW – I took your idea for cutting up my extra celery and carrots and putting them in the freezer. Used a bag for the first time in this recipe, straight out of the freezer and into the pot, and it turned out just fine! Couldn’t tell they had been frozen.

    1. I figured it out… I got 3-4 cups.. I didn’t measure.. very good recipe!! Everyone loved it… Do you have a particular place you buy your rice??

      1. This particular wild rice blend was from ALDI. :)

    2. I would check the package instructions for the rice to see what the serving size is or what the cooking instructions say because they usually include the yield.

  6. I made this last night, following the directions apart from omitting the fried onions (hard to obtain here in Scotland), and I used double cream rather than milk to add calories for an ill relative. It was a big hit, and our relative really liked it.

  7. This is delicious!!! I used 1/2 and 1/2 instead of milk; added some chopped broccoli, and 4 oz of grated smoked gouda. Fabulous. I will definitely make it again. Don’t forget to plan enough time to pre-cook the rice (50 min)!

  8. This was SO delicious!!! I served it on Christmas and it was a huge hit with everyone. I will make it again in the near future. 

  9. Holy crap this was delicious. I almost never remember to go comment on recipes I try… but I loved this so much I had to. Thank you!! Yummmm

    1. I find most dairy milk substitutes to be too watery for sauces like this, but if that’s what you’re used to, you may not mind. I think a couple other people have left comments saying they have used unsweetened dairy substitutes and they enjoyed it, but I personally don’t think I’d like that.

    2. I have been using oat milk in a lot of recipes in lieu of milk, and I have had no issues doing so. I have done this with multiple brands of oat milk with similar results.

  10. This was great! I forgot to comment on this earlier, but I made it after Thanksgiving and added in some chopped turkey – a great way to repurpose leftovers. It would also work well with chopped rotissery chicken or other kinds of meat. Instead of the fried onions, I topped it with Italian-seasoned breadcrumbs and parmesan. Also, I’ll have to try this roux-substitute (the flour and milk and broth) in other recipes – what a great combination, and way easier than most things of this sort!

  11. Beth, this recipe was fantastic! I have never made a casserole before but I decided to try this one. We don’t like mushrooms so I subbed in one sweet potato, tossed with olive oil and S&P then roasted for 25 min before adding into the recipe in place of the shrooms. Subbed the sage (didn’t have any) for marjoram and also used italian seasoned breadcrumbs and parmesan for a thin topping. Everything was delicious! Such a hearty meal, and vegetarian too.

    I have been using your recipes for the past few weeks to do my meal planning and my boyfriend thinks I’m magical now. Thanks again!

  12. I wanted a vegetarian dish I could make ahead and have my husband throw in the oven while I was out. Delicious! I wanted an extra vegetable and threw in green beans because thats what I had and it really made the dish. My husband said it really wouldnt have been right without them and it reminded him of green bean casserole! I was looking for an extra crunch so I added sliced almonds, even better! The two of us could easily get through all these leftovers throughout the week. Thanks for the recipe!

  13. I’m so glad you posted this recipe right before Thanksgiving/Christmas. I made this on Christmas with the standing rib roast, and this was raved about. More so than the rib roast. :) Even with our picky eaters and non vegetable eaters, this recipe was a hit, they even had second helpings. And the leftovers were almost non existent.

    This is the kind of recipe that I like to keep on hand for special occasions and Sundays dinners.

  14. Are the fried onions essential? If so could you suggest a substitute? I can’t get them in my area. Recipe looks great!

    1. They’re not essential, but they are REALLY good on this. In the intro to the recipe I suggest using a mixture of breadcrumbs, Parmesan, and butter if you don’t have the fried onions. :)

  15. Love, love, loved this recipe! I made some adjustments, nixed the celery, added corn, peas, and broccoli instead, and made the whole thing vegan. Truly delicious and perfect for slightly dreary weather in Dallas right now!

  16. So good!!  I used almond milk and whole wheat flour and no French fried onions. Love it!!

  17. Hey Beth – if I’m trying to get away from dairy, have you any suggestions for substitutions for the milk? Do you think some kind of cornstarch slurry would thicken it similarly and do you think it would be just as good w/o the creaminess? 

    1. You can use two cups of broth instead of 1 cup broth and 1 cup milk. It should still thicken the same way, but it just won’t be creamy.

    1. I’m sorry, I do not have a reliable source for nutrition information. The calculators online that most websites and bloggers use are very inaccurate and I don’t feel comfortable posting numbers that I can’t verify.

  18. If I used almond milk instead of whole milk.. would it throw a wrench in the works?

    1. Probably. I don’t find almond milk to be nearly as creamy as whole milk, so the sauce probably won’t be as good.

    2. Try soy milk. It’s a bit heavier. I use it in mushroom soup and I believe it’ll be just as good in this recipe

  19. This was so delicious! One of the best recipes I’ve tried on your site. I’m going to try using half french fried onions and half french fried jalapeños next time. Thanks for another great recipe! 

    1. I have a feeling that if I bought those jalapeños they’d be gone before I ever had a chance to use them in a recipe! Hahah

  20. Our new favorite comfort food recipe! The crispy onions on top are a perfect contrast to the wild rice. Very flavorful, too. Thanks for the great recipe :)

  21. This was so good! I had to make it gluten free so I used GF flour and subbed your recommended breadcrumb (GF)/parmesan/butter topping for the french onions. Just delicious!

  22. This is my new fav comfort food casserole. I just popped this baby out of the oven and it’s delicious and so easy to make. Thanks for the great recipe! 

    1. In theory I think that would work, but I’ve never actually tried it. Just don’t put those onions on until just before it goes in the oven so they don’t get soggy. :)

    2. I made it ahead, and just didn’t add the french fried onions until I was ready to bake the casserole. It worked really great!

  23. Made this the other night and loved it! Left out the mushrooms and celery (because I hate them), but added broccoli, green beans, and corn. Easy to make gluten free with my flour. I’ll make it again!

    1. Thank you I was wondering if I could leave mushrooms out cause they’re gross. 

  24. I made this tonight without the celery and it was a hit! I, too, missed that the rice was supposed to be cooked before beginning. I parboiled the rice while I was mixing the sauce up and then poured the rice in to my braising dish and put it in the oven for 30 minutes with the lid on. Then I took it out, took the lid off and added the onions. Then I baked it for 10 minutes more.

  25. Guys, so my boyfriend and i were so excited for this casserole. He picked up all the ingredients, got it all ready and placed it in the oven. Finally the timer goes off and I go with him to check out this new awesome dish. We take it out and let it sit a few minutes then dig in except, something is very wrong…. the rice doesn’t look cooked at all. I asked him if was supposed to cook the rice first (as its usually the case for rice casseroles) but he reassured me that the recipe did not say that. 2 hours, a half cup of water and 1 cup of milk later and still the rice is way undercooked. He takes some to work the next day for lunch, and I take to the internet to find this recipe. Two seconds into reading the ingredients and instructions I gasp as Im reading the recipe calls for COOKED RICE and I let out a sigh of relief and a loud laugh.
    He ended up eating it anyway. 😂😂😂

      1. Beth, you are so wonderful. He made this dish again and was so pleasantly surprised to see you’ve made it foul proof, highlighting “cooked” rice. Haha thank you so much for that. And wow. My goodness, this casserole is DELICIOUSLY SATISFYING. He was incredibly proud and happy of how it turned out and how much we LOVED IT!

  26. Thoughts on making this ahead of time, popping it in the fridge and heating it up later?

    1. I think that could work. Just don’t put the fried onions on until it’s about to go into the oven, or they’ll get soft. Also keep in mind that it might need to bake longer since the vegetable mixture will be cold going into the oven instead of hot/warm from the stovetop.

  27. This was absolutely delicious!  I added the rest of our leftover turkey meat and I’m truly grateful for the added way to use that up as opposed to yet another sandwich!

  28. Do you think the recipe would turn out alright if the some of the wild rice blend was replaced with cooked lentils (so it would be a mixture of a rice blend and the lentils)? Currently have some leftover lentils in my fridge.

  29. Really enjoyed this! It’s pretty heavy, but that’s more of a personal preference, not a fault with the recipe at all! The french fried onions made the dish.

  30. Truly appreciate your creations ! Thank you for this one ! Enjoy the holidays with your loved ones !

  31. Looks delicious! I think it’d be a good way to use up leftover (cooked) turkey as well – just add it in with the rice, chopped. I might just make that this weekend!

  32. Thinking of adding ground turkey to this, would I need to tweak anything in the recipe to accommodate that?

    1. Nope, that should be a pretty easy addition. I’d just brown it in the pot before starting with the onions and follow the rest of the directions as written from there.

  33. If you wanted to add meat would you just cut it into cubes and quick fry for some color before adding it to the mixture and baking it?

    1. Yes, that would work. I’d cook it all the way through, though. I’m not sure the baking time is long enough to finish cooking the chicken pieces. It really just heats the casserole through.

  34. This would be really easy to make Vegan! When I make this, I’ll add about 1/2C Hemp Hearts to easily up the protein profile.

  35. Oooooohhhhhh….. definitely printing this one. I just found a use for a lone chicken breast that I need to use up!

  36. I love wild rice and always have it in my pantry. This looks incredibly delicious and will definitely be on my menu!

  37. Yum–this can easily take a place on the holiday table, but is easy and economical for everyday–and is a great foundation for collecting leftovers and variations. Thanks, Beth, for another great idea.

  38. Yummy! I made it with half quinoa and half brown rice instead of the wild rice mix because that’s what was in my fridge. I didn’t bother with a topping—I think toasted slivered almonds would be good. 

    1. Oh man, your comment took the words out of my mind. So glad you tried the quinoa and brown rice mixture. Looks like I found my thanksgiving side dish!

    2. Great modification! I did it that way and made it as my side for thanksgiving dinner at my Brother’s house where it was widely savored and enjoyed. Thanks Budget Bytes community!