This cheesy keto chicken broccoli casserole is one of the most popular recipes on My Keto Kitchen — and it’s not hard to see why. With just 4g net carbs per serving, 31g of protein, and a prep time of only 5 minutes, it ticks every box for a satisfying weeknight dinner that actually keeps you in ketosis.
As a nutritionist, I love this recipe because it delivers real, whole-food nutrition without any compromise on flavour. Broccoli is one of the best low-carb vegetables available — packed with fibre, vitamin C, and vitamin K — and when it’s paired with shredded rotisserie chicken and a cream cheese sauce, the result is genuinely indulgent. Even non-keto family members love it (we get that in the comments all the time).
This is a true one-pan bake: mix, top with cheese, and bake for 25 minutes. It serves 8 and stores brilliantly in the fridge for 4 days, making it one of the best keto meal-prep recipes we have. You can also freeze individual portions for up to 3 months.
At a glance
- ✓Only 4g net carbs per serving
- ✓Ready in 30 minutes
- ✓Rated 5 stars by 668 readers
- ✓Great for meal prep & freezing
This recipe is part of our keto chicken recipe collection, where you’ll find my one-pan creamy mushroom garlic chicken and our delicious flame-grilled chicken thighs, plus many more.
Tips for the Best Keto Chicken Broccoli Casserole
- Don’t overcook the broccoli. Boil the florets until just al dente — they’ll continue cooking in the oven. Overcooked broccoli turns mushy and releases excess water into the sauce. 3–4 minutes in boiling water is enough.
- Drain the broccoli thoroughly. Excess water is the main cause of a watery casserole. After boiling, drain well and give the florets a gentle shake in the colander before adding to the mixing bowl.
- Add a crunchy keto topping. One of our readers, Shelley, suggests crushing pork rinds to a breadcrumb texture, mixing with Cajun seasoning, and combining with the shredded cheese before topping the casserole. We’ve tried it — it’s excellent. You could also use crushed pork panko for the same effect.
- Choose your rotisserie chicken carefully. Several readers have noted that some supermarket rotisserie chickens contain added sugars, dextrose, or starches in the brine. If you’re strict keto, check the label or use your own oven-roasted or poached chicken instead. Any cooked shredded chicken works perfectly here.
- Swap the cheese for variety. Cheddar is the classic choice, but Gruyère, Monterey Jack, mozzarella, or a four-cheese blend all work well. A combination of sharp cheddar and Gruyère gives a deeper, nuttier flavour.
- Make it ahead. Assemble the entire casserole — sauce mixed in, cheese on top — cover with plastic wrap and refrigerate for up to 24 hours before baking. This actually improves the flavour as the sauce absorbs into the chicken and broccoli. Add 5 extra minutes to the bake time if going straight from cold.
- Freeze before or after baking. Both methods work. Freezing before baking (assembled but uncooked) gives you a slightly better texture when you finally bake it. Freezing after baking is more convenient. Either way, freeze in portions, cover well, and use within 3 months.
- Turn leftovers into soup. Reader Susan suggests adding frozen riced cauliflower, curry powder, and chicken stock to leftover casserole and blending for an easy cheesy casserole soup. It works beautifully — don’t waste a drop.
Keto Chicken Cheese Broccoli Casserole Ingredients
- 1 pound of Broccoli, cut into florets
- 1 Rotisserie Chicken, meat shredded (approximately 700g/1.5lbs)
- 8 ounces of Cream Cheese
- ¾ cup of Heavy Cream
- ½ cup Unsweetened Almond Milk
- 1 tablespoon of Dijon Mustard
- 1 teaspoon of Garlic Powder
- ½ teaspoon of Salt
- ¼ teaspoon of Pepper, ground
- ¼ cup of Fresh Basil, chopped
- 1 cup Cheddar Cheese, shredded
How to Make Keto Chicken Cheese & Broccoli Casserole
- Preheat your oven to 200C/390F.
- Place a saucepan of water over high heat and boil the broccoli florets until al dente. Drain well and add to a large mixing bowl along with the shredded chicken.
- Add the cream cheese, cream, almond milk, mustard, garlic, salt, and pepper in a small saucepan, and place over low heat. Whisk until the sauce is smooth.
- Pour the warm sauce into the broccoli and chicken mixture, add the basil, and mix well.
- Pour the mixture into a casserole dish and top with the shredded cheese.
- Bake in the oven for 20-30 minutes until warmed through and the cheese has browned.
- Serve immediately.
Keto Chicken Cheese Broccoli Casserole Bake
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Ingredients
- 1 pound broccoli cut into florets
- 1 rotisserie chicken meat shredded
- 8 ounces cream cheese
- 3/4 cup heavy cream
- 1/2 cup unsweetened almond milk
- 1 tablespoon dijon mustard
- 1 teaspoon garlic powder
- 1/2 teaspoon salt
- 1/4 teaspoon pepper ground
- 1/4 cup fresh basil chopped
- 1 cup cheddar cheese shredded
Instructions
- Preheat your oven to 200C/390F.
- Place a saucepan of water over high heat and boil the broccoli florets until al dente. Drain well and add to a large mixing bowl along with the shredded chicken.1 pound broccoli, 1 rotisserie chicken
- In a small saucepan, add the cream cheese, heavy cream, almond milk, dijon mustard, garlic powder, salt and pepper and place over low heat. Whisk until the sauce is smooth.8 ounces cream cheese, 3/4 cup heavy cream, 1/2 cup unsweetened almond milk, 1 tablespoon dijon mustard, 1 teaspoon garlic powder, 1/2 teaspoon salt, 1/4 teaspoon pepper
- Pour the warm sauce into the broccoli and chicken mixture, add the basil, and mix well.1/4 cup fresh basil
- Pour the mixture into a casserole dish and top with the shredded cheese.1 cup cheddar cheese
- Bake in the oven for 20-30 minutes, until warmed through and the cheese has browned.
- Serve immediately.
Video
Notes
Nutrition
Frequently Asked Questions
How many net carbs are in keto chicken broccoli casserole?
This recipe has 4g net carbs per serving (6g total carbs minus 2g fibre). Each serving is approximately 250g / 9oz. Full macros per serving: 416 calories, 31g protein, 30g fat, 6g carbs, 2g fibre.
Is chicken broccoli casserole keto-friendly?
Yes — when made without flour, cream of mushroom soup, or added starch, a chicken broccoli casserole is naturally keto-friendly. This version uses a cream cheese and heavy cream sauce instead, keeping the net carbs at just 4g per serving. It’s one of the lower-carb casserole options available.
Can I use chicken breasts instead of rotisserie chicken?
Yes. Any cooked, shredded chicken works — rotisserie chicken is simply the quickest option. You can use poached chicken breasts, baked chicken thighs, or leftover roast chicken. For the best texture, shred rather than dice the chicken so it absorbs the sauce more evenly.
Can I freeze chicken broccoli casserole — and should I freeze it before or after baking?
You can freeze it either way. Freezing before baking (assembled but uncooked) gives a slightly better texture when you finally cook it from frozen — bake straight from frozen at 200°C/390°F for 40–45 minutes covered, then uncover for the last 10 minutes. Freezing after baking is more convenient if you want grab-and-go portions. Either method keeps well for up to 3 months.
Can I make this casserole ahead of time?
Yes — this is one of the best keto recipes to prep in advance. Assemble the full casserole (sauce mixed through, cheese on top), cover with plastic wrap, and refrigerate for up to 24 hours before baking. The sauce absorbs into the chicken and broccoli, which actually improves the flavour. Add 5 minutes to the bake time if cooking straight from the fridge.
Can I use regular milk instead of almond milk?
Technically yes, but it will add carbs. Regular whole milk has approximately 12g of carbs per cup, while unsweetened almond milk has less than 1g. For strict keto, stick with unsweetened almond milk, unsweetened oat milk (check the label), or simply increase the heavy cream slightly to compensate for the omitted milk.
My casserole turned out watery — what went wrong?
The most common cause is underdraining the broccoli after boiling. The florets hold water in their stems, which then releases into the sauce during baking. To prevent this, drain the broccoli thoroughly after boiling, give it a gentle shake, and if possible let it steam-dry for 2–3 minutes before mixing. Also make sure the oven is fully preheated before the dish goes in.
Can I make chicken casserole dairy-free?
This recipe is heavily dairy-dependent (cream cheese, heavy cream, cheddar), so a full dairy-free version requires significant substitutions: replace cream cheese with dairy-free cream cheese (e.g. Violife or Kite Hill), swap heavy cream for full-fat canned coconut cream, and use dairy-free cheddar-style shreds. The sauce will be slightly thinner and the flavour will change, but it will still bake up well.
Can I make chicken casserole in a slow cooker or Instant Pot?
For a slow cooker: add all sauce ingredients plus the raw broccoli and shredded chicken to the slow cooker and cook on Low for 3–4 hours or High for 1.5–2 hours. Add the cheddar cheese on top for the last 30 minutes. Note that the texture will be softer and there will be no golden cheese crust. For an Instant Pot: use the Sauté function to make the sauce, stir in the chicken and broccoli, then transfer to a baking dish and finish under the broiler for 5 minutes to melt and brown the cheese.
This casserole is a complete meal on its own, but it pairs well with a fresh green salad, roasted asparagus, sautéed spinach, or a simple side of steamed green beans. Some readers serve it alongside keto bread to scoop up the sauce. As a lighter option, serve smaller portions as a side dish alongside grilled steak or fish.
Reader tips
“We like a little bit of a crunchy topping. I crushed pork rinds into breadcrumb texture, added Cajun seasoning, and mixed that with the cheese on top. Perfection!”
★★★★★ Shelley
“Made this just as written — delicious with a fresh green salad. The leftovers I turned into soup by adding riced cauliflower, curry powder and chicken stock. Delicious for lunch.”
★★★★★ Susan
“Just made this for the family tonight. Everyone scarfed it down and said it’s their favourite dish I’ve made!”
★★★★★ Kristi
Want more delicious, easy Keto Chicken recipes? try our;
- Keto Chicken Enchilada Casserole
- Keto Chicken, Bacon, Ranch Casserole
- Keto Parmesan Wings
- Keto Chicken Noodle Soup
Adjust the servings above to make a larger batch of this Keto Creamy Chicken Broccoli Casserole recipe.
Lots more keto casserole recipes here.
Every time I make this recipe my wife looks forward to lunchtime the next day at work! Keto dieting has been made possible by recipes like this. We love this site so much!
Glad you like it Grampa, It is one of my all time favorites too. One casserole last me nearly a week as a side dish.
I will certainly do this recipe today, but wonder where you buy healthy rotisserie chicken these days. The ones that I find at Costco, Food Lion, WalMart have lousy ingredients such as sugar, dextrose, potato starch, carrageenan, soy, etc injected into the chicken. I would love to buy a healthy rotisserie chicken. I love your recipes!
Thank you Della 🙂
The recipe looks like one I want to try. I do not trust rotisserie chicken from any store in 2025, but probably would have done so in 2022. Thank you for putting the weight of the shredded chicken in the instructions. I will use grass fed/finished chicken frim my own kitchen. There is no telling what stores are injecting into those rotisserie birds.
Delicious!
First of all, I love to cook! I’m in my early 60’s and cooking and keto are my passion. THIS is one of the easiest and best recipes I’ve made! We love it so much that I’m going to try halving the recipe, all but the broccoli, omitting the chicken for an easy and delicious side dish with fish or steak!
Thank you thank you!!
Hello Paula, thank you so much for your feedback, Im so glad that you enjoy. Its one my favorite recipes too.
Made this just as written except only 1/2 because theres just 2 of us. It was delicious with a fresh green salad. The leftovers I decided to make into soup next day by adding some frozen riced cauliflower , 2.5 tsp curry powder and 2c of chicken stock and pureeing (took out a little for texture and added back in at end) delicious for lunch.
Hi Susan, love the soup idea and Im a big fan of curry so I might give that a try next time. Thank you!
Meal prepping for our family of 7 going to the beach. Should I cook this before freezing or after? Thanks!
Hi Julie, You could do either. I think cooking after freezing might be better but I have not done that.
thank-you so much for this recipe. I wasn’t sure how it was going to taste but tried it just the way it was written. I was so glad to be surprised ! Just the right amount of seasoning and all the flavors came together and was very satisfying. I will be back to explore more recipes for sure.
Hello Terry, thank you. Its one of my favorite recipes actually its our popular recipe. Thank you for the feedback.
Can I make it w/ regular milk?
Hello Fatima, yes you can but you’ll have to consider the sugar and carbohydrate content of milk. Hope that helps.
My husband absolutely loved this. What else is there to say? It’s definitely going into the regular rotation. Thank you!
So glad he loved it Lilly. It’s one of my favorites too. So easy!
I love this recipe. I live alone. Freeze in individual containers! Saves money on food bill and tastes amazing.
Thank you Susan 🙂
My family and I love this recipe! It’s delicious and a great way to use fresh basil from the garden (I’m always looking for places to use that!) I ESPECIALLY appreciate the measurements of ingredients added to the steps in the recipe, so I don’t have to go back and forth or pre measure everything beforehand.
Hello Tara, its one of my favorite recipes too. We make it all of the time, even our non keto friends make it. Thank you for the kind words 🙂
My husband told me multiple times how good this casserole was, and he offered that I can make it again anytime. It’s hard to please the teenager with anything that includes vegetables and “too much” cheese, but the grown-ups loved it.
I just loved the keto creamy chicken broccoli casserole recipe! I would love to finish the recipe with a little bit of clarified butter or ghee. I personally prefer the taste of ghee instead of any other cooking fats.
We like a little bit of a crunchy topping on our casseroles. I took a couple of cups of pork rinds in each them down into breadcrumb texture, added some Cajun seasoning, and then mixed that with the cheese to top the caserole.
PERFECTION! We loved the creamy casserole with the crunchy topping.
Hello Shelley, what a great idea. I will give the pork rinds a go next time we make it. Thank you for the tip and feedback.
Yum! I read your review and add panko to mine. I can’t get enough of this recipe!
That sounds yummy, but panko is not keto 🙁
Just made this for the family tonight. Everyone scarfed it down and said it’s their favorite dish I’ve made!
“scarfed it down” love it! Thank you for the feedback, Kristi glad you loved the casserole, it’s one of my favorites too!
It’s rare that everyone in the fam, including 3 professional cooks, can agree on a casserole.
AND I didn’t share that it was keto
Hi Pat, thank you so much. So glad everyone loved it. It is our popular recipe by far, everyone loves it.
Delicious, non keto husband LOVED it!! Making it for a neighbor who just got home from the hospital. Thank you so much!
How good is it when you can have Keto and those that aren’t keto love the food too? Thank you for the feedback, Lani, it’s our favorite casserole recipe too.