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Whole30 Chicken Broccoli Casserole (paleo, dairy-free)

A must-make Whole30 casserole recipe that’s creamy, cheesy and flavorful – without any cream or cheese! Shredded chicken is mixed with sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner.

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

Whole30 Chicken Broccoli Casserole

While many people seek out Whole30 recipes as part of a January or September Whole30 reset (the months most do the program), I like to remind folks that Whole30 recipes are still delicious every day of the week. They’re just free of gluten, grains, dairy, sugar and legumes. But they’re certainly not lacking in flavor.

In fact, I’d wager to guess most people think this recipe has dairy, because it’s super creamy and cheesy-like. You can thank my Vegan Alfredo Sauce recipe for that (which on it’s own is a reader favorite recipe).

What’s in this Whole30 Casserole Recipe?

If you’re wondering what’s in this Whole30 casserole recipe, ingredient-wise, let me cut to the chase. It includes shredded chicken, sautéed mushrooms and onions, broccoli, herbs and my Vegan Alfredo sauce. It’s a handful of simple ingredients, then it’s baked to perfection.

The end result is a creamy, savory, packed-with-flavor casserole recipe that gets even better the second day (if you happen to have leftovers).

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

How to Make this Whole30 Casserole Recipe

Make the Vegan Alfredo Sauce

The most important thing in this recipe is remembering to soak your cashews overnight for the sauce. You could also make the entire Vegan Alfredo Sauce recipe the day before and store it in the fridge until you’re ready. Or you could make it same day. It’s entirely up to you.

Make the Shredded Chicken

Cook the chicken on the stovetop, then transfer the chicken breasts to a stand mixer with a paddle attachment. Turn the stand mixer on low for 15 seconds and you have the easiest shredded chicken ever. If you don’t have a stand mixer you could use two forks to shred. But if you do have a stand mixer, this is one of my favorite kitchen hacks.

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

Sauté the Vegetables

Quickly sauté the mushrooms and diced onion, then add the broccoli and sauté a few minutes longer until it’s crisp tender. Super easy.

Assemble the Casserole

Once all of the individual pieces are done, it’s simply a matter of assembly. Add the shredded chicken to the bottom of a casserole dish, then layer on the broccoli and mushrooms. Pour on the Vegan Alfredo Sauce (that’s thinned with a cup of chicken broth) and bake the casserole for 20-25 minutes in a 400F oven.

When the casserole comes out of the oven it’s bubbly, tender, creamy, savory and so delicious you’ll definitely go back for seconds. Enjoy!

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.

For More Delicious Whole30 Recipes:

Watch Me Make This Whole30 Casserole Recipe:

Whole30 casserole recipe with shredded chicken, sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. It's also a dairy-free and paleo casserole recipe.
4.88 from 25 votes

Whole30 Chicken Broccoli Casserole (paleo)

Prep Time: 20 mins
Cook Time: 25 mins
Total Time: 45 mins
Servings: 6 servings
Author: Lisa Bryan
Print Recipe Pin Recipe
A must-make Whole30 casserole recipe that creamy, cheesy and flavorful - without any cream or cheese! Shredded chicken is mixed with sautéed mushrooms and broccoli, then topped with my Vegan Alfredo Sauce for an easy and healthy weeknight dinner. Watch the video above to see how quickly it comes together!

Ingredients

  • 4 cups cooked and Shredded Chicken
  • 2 tbsp olive oil
  • 2 heads broccoli, florets removed
  • 10 cremini mushrooms, sliced
  • 1/2 small onion, diced
  • 1 cup chicken broth
  • 1 recipe Vegan Alfredo Sauce
  • salt and pepper, to taste
  • rosemary, for garnish

Instructions

  • Make the Vegan Alfredo Sauce and set aside. This can also be made the day before and stored in the fridge.
  • Preheat the oven to 400 degrees fahrenheit.
  • Heat the olive oil in a large sauté pan over medium heat. Add the sliced mushrooms and diced onion and stir for 3 minutes. Add the broccoli florets (make sure they're in bite-sized pieces and not too large) and stir for another 3 minutes or until the broccoli is crisp-tender and bright green.
  • Place the shredded chicken in a 9x13-inch casserole dish, covering the bottom. Add the sautéed mushrooms, onions and broccoli in a flat layer on top.
  • Stir the chicken broth into the Vegan Alfredo sauce, then pour on top of the broccoli in the casserole dish. Use a spatula if needed to make sure everything is well coated.
  • Cook the casserole for 20-25 minutes. The sauce should be bubbling and slightly reduced and thickened. Garnish with fresh rosemary if desired and serve immediately.

Lisa's Tips

Nutrition

Calories: 417.1kcal, Carbohydrates: 27.3g, Protein: 42.8g, Fat: 17.4g, Saturated Fat: 3.4g, Cholesterol: 76.9mg, Sodium: 593.9mg, Fiber: 8.3g, Sugar: 7.1g
Course: Main Course
Cuisine: American
Keyword: chicken broccoli casserole, chicken casserole, Whole30 casserole
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88 comments on “Whole30 Chicken Broccoli Casserole (paleo, dairy-free)”

  1. Delicious! Everyone in the house loves it, and it’s been printed off to be added into our regular rotation!

  2. My sauce was not as smooth as a traditional Alfredo. Recipe overall just fair.

    • Sorry you didn’t love the recipe Ann. Did you use a high-powered blender to make the alfredo sauce? You can see it’s ultra smooth and creamy on my post, so if it wasn’t smooth for you it could be due to the power of your blender. Hope you love the next recipe you try!

  3. This looks delicious! I haven’t made it yet but I am excited to try it. Does this freeze well? I live by myself so 6 servings is too much for me unless I can freeze it. If it doesn’t freeze well I’m going to half the recipe.

    • Hi Andrea – I too am one person at home. So yes, freezing larger meals is important for me and I’m happy to say this meal does freeze well. I hope you enjoy the casserole!

  4. Just made this recipe and oh..my..god so good. The Alfredo sauce is amazing. Will definitely be making this again soon

    • Thanks Mad – I’m so glad you enjoyed the recipe! Yes, the alfredo sauce is truly amazing! :)

  5. Oh my….this is DELICIOUS.  Can’t stop making it and please don’t be tempted to replace the sacue with a roux; this one is tip top!

  6. Easy and delicious! My kids (ages 1 and 4) loved it, too!

  7. I made this over the weekend and it was delicious, especially the next day! Used the chicken stock from poaching the chicken breasts to thin the alfredo sauce – it was flavorful and satisfying, without the heaviness of “regular” alfredo sauce.

  8. I cannot recommend this enough! Even my toddler loved it ❤️ Officially part of our regular dinner rotation. M

    • Yay, its always a huge win when the toddler enjoys the recipe! So glad you all loved it.

  9. Recipe does not state what the chicken broth is for

  10. This dish is totally amazing — way more than the sum of its parts. Absolutely satisfying and delicious, don’t save it for just when you are doing Whole30! And that sauce… I’ll be making it to use in a bunch of other dishes. I want to note that I made the whole thing up and put it in the fridge for a couple of hours before making, since I wanted to go to a late yoga class and then just pop it in the oven when I got home. The chilling had no negative effect, it came out perfectly (I did cook it for an extra 10 minutes). Thank you Lisa!!!

    • Yay! I’m happy you loved it! It’s amazing what a few simple ingredients can do when matched together, isn’t it? And thanks for sharing the note about the sauce as well. :)

  11. I am not paleo, Whole 30, etc. but love the idea of this recipe. I’m wondering if I use regular homemade or jarred Alfredo sauce, would I still need to add the chicken broth to it? Do you add chicken broth because the vegan sauce needs that additional liquid or would regular Alfredo sauce still need it too?

    • I add broth to the vegan alfredo sauce as it’s pretty thick on it’s own and it thickens up more while cooking. You could certainly try it with jarred alfredo sauce and I think it should be fine. :) If it’s a super thick alfredo sauce you could always thin it down a bit as well.

  12. I’m new to cooking at home and decided to make this my first attempt. I used some ingredients I already had on hand and it turned out great. The dish lasted me 5 days. The ingredients I substituted for were beef bone broth and two dark gravy packets. Lisa Bryan gets it. This is the only cooking site I’ve found that makes cooking easy and fun for me, a single dad that has been keeping the fast food restaurants in business for years. Thank You Lisa

    • You’re more than welcome Noel! And good for you! You should feel really proud of yourself for whipping up your first casserole recipe. Thanks so much for your kind words and I’m happy you love my recipes. I can’t wait to hear what you whip up next. :)

  13. I made this tonight and it was perfect. My whole family loved it and it was creamy and flavoriful!

  14. Really enjoyed this dish. I’m not whole 30 or Paleo, but avoid dairy due to allergies and I’m trying to learn to cut out more grains/bread. I didn’t have enough or the right kind of mushrooms and it was still delicious. Easy to do once the chicken was cooked ahead.

  15. Do you know what the calories are per serving?

  16. Could you add pasta noodles to this? 

  17. Made this for my first night of Whole30, and boy is it delicious. I think I would roast the broccoli seperate next time to keep it a little lighter, the cashew sauce makes it pretty rich. Thanks so much for this recipe!

  18. I made this today and it came out great! The only thing I didn’t have was dried rosemary so I put in some dried parsley. I think it would be even better with the rosemary. The Alfredo is amazing!! I was in doubt it would taste like the unhealthy version but it does! I think the only thing it needs is a crunch factor so next time I’m thinking I might put in water chestnuts like those old school 1950’s casseroles. I sprinkled a little more nutritional yeast on top (like you would cheese) and the whole thing was delicious. By the way the shredded chicken in a stand mixer trick is genius. I will do that more in the future!

  19. Going to try it tonight. Looks like comfort food

  20. This dish is amazing!  I had a bunch of people coming over for dinner today, and only two of us are doing Whole30.  I will tell you everyone had at least seconds.  Some people had thirds!  I had just a little bit leftover from the entire pan when all was said and done.  The recipe was so easy to follow and the results were spectacular.  Thank you so much for this amazing recipe and video!  What a hit!  Can’t wait to try even more of your recipes!!

  21. Wonderful recipe. I made it with Turkey and Turkey broth, it was absolutely wonderful! My husband loved it!

  22. Hi! If going to make and freeze do I bake it and then freeze it or make and put in freezer without baking it? Also could I make the night before(without baking), keep in the fridge and then bake the next day?

  23. This is so delicious! I can’t wait to make it again. My whole family loved it. So yummy, so healthy. Thank you Lisa!

    Rating: 5
  24. Just made this tonight… sooooo delicious, thank -you for the awesome recipe!!

    Rating: 5
  25. Dear LisaThis is a super recipe. Again I did some modifications. I don’t eat meat so I used quorn fillets, I can’t tolerate onions so I used celery stalks in its place both for the main dish and the sauce and I don’t use nutritional yeast but had some leftover parmesan cheese and used that instead in the sauce. But I think it’s close enough to your original recipe and I absolutely love it. Also it will give me two or three leftovers for one effort of cooking it. This will be on my favourites list for the rest of the winter! Thank you!!!!

    Rating: 5
  26. Can this be frozen after the complete casserole has been made and then thawed out to reheat?  Please let me know, thanks so much!

  27. Ho! Ly! Crap! This was DELICIOUS!!! It was also quite easy to make. I can’t have onions or garlic, so I used asafoetidae powder instead (but it’s a very similar in taste, so I don’t think it changed the overall recipe profile very much). I also could only find roasted cashews in the store I was in, but they work pretty well. There was a tiny bit of graininess to the sauce, but I think that would be fixed by using raw cashews as the recipe dictates. Anyway WOW this shot right to the top of my family’s favorite weeknight recipe list! A+!

    Rating: 5
  28. Would it work with white mushrooms instead of cremini (i have some in my house already) or does the cremini mushrooms make it much better and its worth it to go to the store for it?

  29. HI
    I wanted to know of another cream that you can make that does not have any nuts.:)
    Thanks
    shelby

  30. This recipe was absolutely delicious!! Perfect to satisfy that comfort-food craving on a winter day, with whole food ingredients. Thank you so much Lisa for this healthy ingenious recipe! I’m sure to hit my fitness goals eating healthy and delicious like this!

    Rating: 5
  31. This was amazing! Worth 10 stars! Thank you a thousand times! I have been on a mission to find healthy recipes my whole family will enjoy. My son, in particular, is very fussy about food. He HATES meat, most vegetables, and fruit, and, well, pretty much everything I make unless it’s crappy kid food. Well, to my surprise, tonight’s experiment was a smashing success. He ate a small plateful, including the chicken, without being asked, cajoled, threatened – he even had seconds, people! First time in 4 years!!!! I was shaking a bit trying to keep my cool as I wordlessly served him a second helping of this casserole. My daughter, who eats everything anyway, but never doles out praise, made sure to tell me “Mom, keep the leftovers, I want to eat that tomorrow!” I’m stunned!!! You all need to try this meal! 

    Rating: 5
  32. I would love to try this recipe, but my boyfriend can’t eat nuts. Do you have any recommendations for working around that? Thanks!

  33. HI there, This sounds so great. My kids are allergic to all nuts. What else can I use instead of nuts?ThanksShelby

    Rating: 5
  34. Could you make this with salmon? If so, would it be ok to cook it beforehand then cook it again in the bake?

  35. I can’t wait to make this for my aunt who is battling cancer and needing healthy meals. I’m hoping to make a double batch and freeze it for her family. Does it freeze well or does the “cheese” separate and become less creamy?

    Rating: 5
  36. Beautiful recipe! It’s so simple and I love the use of everyday ingredients! I often have cooked chicken on hand, as well as cooked rice. This meal goes the distance…and it’s perfect for meal prep. Thanks for another winner!

    Rating: 5
  37. This is sooo good! Love the Alfredo sauce. I usually double it and freeze half. So glad to have another recipe for it!!!

    Rating: 5
  38. Lisa. whole 30 or not, this dish looks super delish and inviting! The fact that its whole 30 is a bonus! Thanks!!

    Rating: 5
  39. This is totally my kind of recipe! Broccoli is a favourite in our house so I’m going to be making this very soon.

    Rating: 5
  40. This looks amazing! My husband is doing a whole 30 and he’ll be happy to taste another delicious dish.

    Rating: 5
  41. Always looks for easy whole 30 recipes! My aunt started Whole 30 on January 1 and I have been hunting recipes for her!

    Rating: 5
  42. I am all about casseroles – especially healthy ones! I’m going to check out your vegan Alfredo sauce too!

    Rating: 5
  43. Any ideas for a mushroom substitute?

  44. This looks so delicious! I swear I just smelled the beautiful rosemary sprigs. Thank you for sharing, Lisa. :)