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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).

Whole30 Casserole Recipe Video

Want to know how to make this delicious casserole recipe? Watch the quick tutorial video below!

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:

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.
4.9 from 56 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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180 comments on “Whole30 Chicken Broccoli Casserole (paleo, dairy-free)”

  1. How would you reheat this?

  2. What is the serving size for the nutritional information listed at the bottom?

    • Hi Ally- I’ve divided this casserole into 6 servings. So the nutritional information will be for one serving :)

      • Absolutely amazing and delicious!!! Coworkers were in disbelief that the sauce was dairy free with only whole and natural ingredients. I make this once or twice a month since finding the recipe last summer!

      • Amazing! Glad you’ve enjoyed this recipe so much already :)

  3. Is there any way to make this day of if I didn’t have time to soak the cashews or won’t it taste good/work?

  4. I was skeptical when I tasted the sauce raw. But cooked into the final dish – omg. Omg! Was amazing!! I did cheat and topped mine with some bread crumbs. I ate half the casserole myself. Sooooooo good!!!

  5. Absolutely delicious ! Only thing is I couldn’t get mine to firm up to be a casserole…. was more of a saucy dish but still extremely tasty 

  6. How much cashews (the alfredo sauce) do you use if theyre already ground into powder? I noticed Walmart is selling cashew flour now, Ive tried grinding cashews before and it never comes out smooth.

  7. Thank you for all of your work. The videos and recipes and ideas. You have totally transformed my kitchen and my food mindset. Each day is one step closer to better health for me. Loved your zucchini lasagna and cilantro lime rice and looking forward to trying more. Regarding this recipe, would you have a recommendation for a substitution for the mushrooms?

    • Hi Rana- So glad to hear my content has made a positive impact on your lifestyle! As a replacement for mushrooms, you can simply omit it and add a bit more broccoli instead.

  8. We made this in our house over the weekend. AMAZING! such flavor and aromatics. Thank you!

  9. So after making this recipe I have some leftovers. Once the broccoli no longer has a crunch, I found adding some roasted salted macadamia nuts refreshes the dish and reminds me of the crunchy onions you often find on some Thanksgiving classics casseroles. 
    Also an easy way to add kcals to my diet. I find it hard to hit 2000+ when on a whole30. 

    • Hi Jeff- Love the idea of adding macadamia nuts to this! That’ll definitely give it a delicious crunch :)

  10. Made tonight and it was so good!! I would have liked more mushrooms but that is just personal preference. It was supposed to be just for me (doing Whole30) but my 11 year old stole a bite and then decided he loved it as well :)

    • Hi Tami- Wonderful! So glad you and your 11 year old both enjoyed this casserole :) I have a feeling he might just like my whole30 recipes!

  11. How many calories are in this recipe ?

  12. Can I freeze the prepared dish?

  13. I don’t know what I did wrong but the casserole came out really watery not creamy. ;( Still tasted good though. 

  14. Hello! My daughter just recently found out she’s allergic to cashews. Is there an alternative for the cashew in the Alfredo sauce? (No walnuts or almonds either please) 

    • Hi Heather – unfortunately, there’s not for this recipe. But I have seen some coconut milk-based alfredo sauces online. You might want to Google that. :)

  15. Made this today! So good! Thanks! I didnt have any rosemary so I skipped that, and I also added TJ’s 21 Seasoning Salute and Umami Mushroom Powder. woot!

  16. This recipe is simply delicious!!
    I made it on Sunday and able to have lunch for several days during my busy week.
    My husband even liked it enough to call it “a keeper” in our regular repertoire!

    • Hi Melinda – That’s great both you and your husband love this recipe! It’s such a great meal prep dish as well.

  17. Loved trying this one! I think this recipe is on the right track for sure, but I could really taste the raw onion in the sauce, even with the already sautéed onions in the veggie mix. My suggestion would be to sauté the onions before adding to the vegan alfredo sauce.  

    • Hi Christine – I’m so glad you enjoyed the recipe! Also, that would be a great idea for those who don’t want such a strong onion taste.

  18. The nutritional breakdown – is that the whole thing or per serving?

  19. Hi Lisa,  I made this casserole twice in the last month and for some reason it came out dry both attempts almost like the sauce is being absorbed too much into the chicken and broccoli and the chicken tastes dry also.  I have never had luck with any type of chicken casserole and has to be something that I’m doing wrong. I definitely made sure that I didn’t over cook the chicken in the pan.  🤷‍♀️ all the previous comments have had nothing but success.  I will keep trying anyway…. if you don’t succeed try, try, again 🤪😉

  20. Made this tonight and it was delicious!! Our daughter, who is a bit picky and a light eater, said she loved it and had seconds. We are gluten (Celiac)  and dairy free, and it’s so great to have your site and videos as resources. I came across one of your videos when looking for information on my new Vitamix and now I use your site regularly. Thanks so much for what you do!

  21. Love this casserole! I’ve made it 4 times in the last couple months and it’s a winner every time. The revelation for me, though, was the vegan/cashew Alfredo sauce. I’m lactose intolerant so I’ve been missing creamy sauces. No more!

    • Hi Tara – I’m so glad you discovered my vegan alfredo sauce then! It’s the perfect replacement for you :)

  22. This recipe is DELICIOUS!!! Will definitely be a regular recipe in our house!

  23. What a great recipe! This turned out so delicious and I’ll definitely be making it again!

    • Hi Kim – So glad that you loved this recipe! :)

    • I had some leftovers of shredded chicken and some broccoli waiting for me in the fridge, so it was the perfect time for cooking this casserole…. It turned so delicious my husband and teen daughter loved it. And as I am gluten and dairy free and low carb 😰, I was so happy to eat this amazing creamy meal! So a big thank you Lisa to make my diet more easy to follow and yet delicious. I am so grateful. 🙏

  24. I am always looking for new broccoli recipes. Love the casserole with chicken. Now I have Sunday dinner!

  25. This is a great recipe, even for people like me who don’t do any special diet like the whole30. As long as the dish turns out great, I’m saving it and adding it to my rotation. :)

  26. This is the kind of dish I love making and serving to my family! I also love the idea of the mushrooms in it – great idea! Thanks for the recipe!

  27. These savory meal – chicken broccoli casserole – looks and sounds amazing. It is worth trying! I am sure that my family will enjoy my new experiment:)

  28. This was delicious! Made it with a friend who is not dairy free and she loved it! It’s a perfect comfort food  while still being nutritious.  

  29. I wasn’t sure what all the fuss was about but this tastes like it has so much cheese and milk/cream deliciousness whilst being able to use up random veges left in the fridge. I made it on a weeknight but I soaked the cashews for the sauce the night before and blended it while the chicken was browning. I didn’t have the mushrooms so other veges were used and partially softened in the microwave before combining them with the broccoli. Another fabulous recipe – simple, healthier and most importantly delicious. The Cashew Alfredo sauce is worth trying at least once!

    • Hi Asuka – I’m glad you were able to use up leftover veggies in your fridge :) A casserole is always a great way to use up leftovers!

  30. I made this recipe and loved it. It takes a wail to assemble but it’s totally worth it. 

    • Hi Flor – I’m so glad you loved this recipe! The end is definitely worth it, especially if you plan to meal prep this for the week!

  31. Does this taste good with real alfredo sauce? Or is it better with the vegan kind?

  32. Would this still work with normal alfredo sauce?

    • Hi Casey – If you are to try and keep this a Whole30 Dish, it’s best to create my homemade alfredo sauce! But, if you just want to make the recipe on it’s own, then feel free to use normal alfredo sauce :)

  33. Does this recipe freeze well?

  34. Hello Lisa,
    I just poped the dish in the oven … will post on Instagram later. It’s the second time I’m making this recipe… my husband and I love it … many thanks for being so inspiring ❤️😎

    • Hi Babs – I’m so happy you and your husband are loving this casserole! It’s definitely been a reader’s favorite and great for meal prepping for the week. Can’t wait to see your creation on Instagram :)

  35. Such a creamy and conditions meal. We’ve fooled many into thinking it had dairy in it. We love dairy free meals that speak to our souls need for creamy comfort foods.

    • Hi Brie – This definitely tricks people into thinking it’s the real thing 😊 Glad you guys enjoyed this recipe!

  36. Hi Lisa! Big fan of your channel, and I always give your videos a thumbs up. I was wondering if you had any mock meat brand substitute suggestions for the shredded chicken if I wanted to make a vegetarian version?

  37. Chicken, broccoli, mushroom Alfredo casserole was very good. I was going to add cauliflower rice, but decided at the last moment to bake Yukon hold potatoes, slice and put on the bottom. I also had to add a little more chicken broth. 

    • Hi Terryl – Glad you enjoyed the casserole dish! Cauliflower or yukon potatoes would be a great option to add.