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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.
4.89 from 35 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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120 comments on “Whole30 Chicken Broccoli Casserole (paleo, dairy-free)”

  1. 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.  

  2. 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!

  3. 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!

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

  5. 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 :)

  6. Does this recipe freeze well?

  7. 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 :)

  8. 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!

  9. 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?

  10. 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.