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Cheesy Keto Chicken Broccoli Casserole

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Tender broccoli, juicy chicken, and a cheesy creamy sauce combine to create a meal that’s hearty, delicious, and low carb. This Keto Chicken Broccoli Casserole is an easy crowd-pleaser! Best of all, you can prepare it in a slow cooker!

Keto Broccoli Cheese Casserole in a crock pot

Keto Broccoli Chicken Casserole…in the Slow Cooker!

Easy, creamy, and cheesy, this Keto Crockpot Chicken and Broccoli is a great weeknight recipe for the whole family. This recipe is very similar to traditional broccoli casseroles, but with the removal of breadcrumbs and the addition of chicken, it becomes a keto-friendly protein-packed meal!

This is a great recipe when you want to feed the whole family, but don’t want to prepare two separate meals. Everyone can eat this easy chicken and broccoli casserole! It’s delicious and nutritious, whether or not you’re counting carbs.

Why I Love This Recipe

  • A complete meal with just 7g net carbs per serving
  • Naturally gluten-free
  • A good source of calcium, protein Vitamin A, and Vitamin C


Close up of Keto Cheesy Crockpot Chicken and Broccoli Casserole


  • 30 oz. frozen broccoli (one large bag)
  • 3 cups shredded rotisserie chicken
  • 2 TB butter
  • ½ onion (chopped)
  • 2 teaspoons minced garlic or garlic powder
  • 1 ½ cups heavy whipping cream
  • 1 cup unsweetened almond milk
  • Salt and pepper, to taste
  • ¼ cup chopped green onions
  • 2 cups shredded cheddar cheese

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Keto Cheesy Crockpot Chicken and Broccoli Casserole Ingredients


  1. Melt butter in a sauce pan over medium heat, then stir the chopped onions. Sauté until the onions begin to soften, then mix in the garlic and cook for 30 more seconds.
  2. Pour in heavy whipping cream, almond milk, and a pinch of salt and pepper.  Simmer until the mixture thickens.
  3. Add broccoli florets, shredded chicken, and green onions to a slow cooker.
  4. Pour in the cream sauce and top everything evenly with shredded cheese.
  5. Put the lid on the crockpot and cook on HIGH for 2 hours.

4 step photo collage showing how to make chicken, broccoli, and rice casserole in a slow cooker

Prep Tips

  • For the shredded cheese, I recommend buying block of real cheddar cheese and grating your own. Packaged shredded cheese often contains starches and other additives to keep it from sticking together in the bag. Always check the ingredients and nutrition information first if going the packaged cheese route.
  • Feel free to swap cheddar cheese with your favorite type of cheese, such as mozzarella cheese. You could even do a mixture or top with grated parmesan cheese for more flavor. Again, I recommend buying a block of pure cheese and shredding your own.
  • Fat is our friend on keto, which is why we use butter to cook our onions here. However, you can alternatively use a non-stick cooking spray.
  • Want to add a little something? Try serving this broccoli casserole with our easy cauliflower rice!
  • Rotisserie chicken is easy to use, but you can also cook your own chicken breasts and shred them yourself. This take a little more time, but is more budget-friendly and is lower in sodium.
  • I don’t add a lot of salt to my foods, but you probably won’t want to use more than a teaspoon salt and 1/2 teaspoon black pepper.

Keto Broccoli Cheese Casserole on a serving plate

Frequently Asked Questions

How Many Net Carbs Per Serving?

This keto chicken casserole recipe makes a lot of food, as it is designed to provided a family-sized dinner and be a complete meal. We based our serving size on 8 total servings in the recipe, so you may end up with more or fewer servings depending on how much you portion out when plating.

Based on 8 servings, each serving will have about 7 grams net carbohydrates. When you take into account that this is a full meal, with protein and vegetables, 7 grams net carbs is quite low and can easily fit into even a fairly strict keto diet. (Tip: Net carbs = total carbs – fiber)

Can I Use Real Milk Instead Of Almond Milk?

We use unsweetened almond milk in many of our recipes because it is extremely low in carbs, even more so than regular dairy milk. For comparison, 1 cup of unsweetened almond milk has less than 2g net carbs, while 1 cup of 1% milk contains 12g net carbs. That’s a big difference!

That being said, you are welcome to use dairy milk or simply use more heavy whipping cream in place of the almond milk. Keep in mind that substitutions will change the nutritional content and carb count.

Can You Bake This Casserole In A Conventional Oven?

One of the benefits to using a slow cooker is that you can start with frozen broccoli and it will cook completely and evenly. It will also stay warm until you’re ready to serve dinner.

While you CAN prepare this recipe in a casserole dish in the oven, you will need to pre-cook the broccoli first.

After you’ve thawed and pre-cooked the broccoli so that it’s softened (but not mushy), add to a large casserole dish with the pre-cooked chicken and green onions.

Prepare the cream sauce as described in the original recipe and pour into the casserole dish. Cover with shredded cheese and broil for 2-5 minutes, until the cheese is melted to your liking.

So as you can see, the oven method takes less time, but more prep work. Either way will be delicious though!

Keto Broccoli Cheese Casserole, in a slow cooker

More Keto Slow Cooker Recipes To Try

Completed Keto Broccoli Cheese Casserole, close up for detail

Slow Cooker Keto Chicken Broccoli Casserole Recipe (Printable Recipe Card)

If you like this recipe, rate it! We’d also love to hear your thoughts in the comments below.

Slow Cooker Keto Chicken Broccoli Casserole

Tender broccoli, juicy chicken, and a cheesy cream sauce combine to create a meal that's hearty, delicious, and low carb. This Keto Chicken Broccoli Casserole is an easy crowd-pleaser! Best of all, you can prepare it in a slow cooker!
Prep Time15 mins
Cook Time2 hrs 15 mins
Total Time2 hrs 30 mins
Course: Main Course, Main Dish
Cuisine: American, Keto
Keyword: casserole, keto, Keto Cheesy Crockpot Chicken and Broccoli Casserole
Servings: 8
Calories: 426kcal
Author: Stacey
Cost: $12


  • Slow Cooker
  • Saucepan


  • 30 oz. Frozen broccoli
  • 3 cups Shredded chicken
  • 2 TB Butter
  • ½ Onion chopped
  • 2 teaspoons Minced garlic
  • 1 ½ cups Heavy whipping cream
  • 1 cup Almond milk unsweetened
  • pinch Salt and pepper to taste
  • ¼ cup Green onions chopped
  • 2 cups Cheddar cheese shredded


  • Melt the butter in a saucepan over medium heat, then stir in the chopped onions and cook until they begin to soften.
  • Mix in the garlic, and saute for 30 seconds, then pour in the heavy cream and almond milk. Add salt and pepper, to taste. Simmer until the mixture thickens.
  • Add the broccoli, chicken, and green onions to slow cooker.
    4 step photo collage showing how to make broccoli chicken casserole in crockpot
  • Pour the sauce over the ingredients in the slow cooker, then top everything evenly with shredded cheese.
  • Cover and cook on high for 2 hours.


Nutrition information is provided as an estimate only and will vary based on exact ingredients used and serving size.
Net Carbs: 7g per serving


Calories: 426kcal | Carbohydrates: 10g | Protein: 24g | Fat: 33g | Saturated Fat: 19g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 1g | Cholesterol: 126mg | Sodium: 335mg | Potassium: 545mg | Fiber: 3g | Sugar: 4g | Vitamin A: 1742IU | Vitamin C: 97mg | Calcium: 330mg | Iron: 2mg

Pin our Low Carb Chicken Broccoli Casserole on Pinterest:

Keto Broccoli Cheese Casserole Pinterest Image

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