Keto Chicken Casserole (Easy, Cheesy & Delicious)

By Daisy Sullivan

On January 24, 2026

A close-up shot of a serving of cheesy low-carb chicken casserole on a plate, highlighting the creamy texture.

Cuisine

American

Prep time

15 minutes

Cooking time

25 minutes

Total time

40 minutes

Servings

8 servings

Get ready to fall in love with a dish that proves you don’t need carbs to enjoy incredible comfort food. This Keto Chicken Casserole is the ultimate one-pan wonder, delivering a rich, creamy, and cheesy experience that will satisfy the entire family. It’s packed with tender chicken, nutritious vegetables, and a savory cream cheese sauce, making it the perfect solution for a busy weeknight dinner. Forget everything you thought you knew about diet food; this recipe is pure indulgence.

Why You’ll Love This Keto Chicken Casserole Recipe

This isn’t just another dinner recipe; it’s a game-changer for anyone following a low-carb lifestyle. It’s incredibly easy to assemble, requires minimal cleanup, and is bursting with flavor. We’ve designed this Keto Chicken Casserole to be both satisfying and simple, ensuring it becomes a staple in your meal rotation.

  • Unbelievably Creamy: A rich sauce made from cream cheese, heavy cream, and cheddar creates a luxuriously smooth texture.
  • Family-Friendly: Even the pickiest eaters won’t be able to resist this cheesy, savory bake. It’s a guaranteed crowd-pleaser.
  • Perfect for Meal Prep: This casserole holds up beautifully, making it an excellent option for make-ahead lunches or dinners.
  • Customizable: Easily swap out the vegetables or add your favorite keto-friendly extras to make it your own.
The full keto chicken casserole in a baking dish before being served, garnished with fresh parsley.
Ready to dive into this easy weeknight dinner.

The Key Ingredients for Your Low-Carb Casserole

The magic of this dish lies in its simple, high-quality ingredients. Each component is chosen to maximize flavor while keeping the carb count incredibly low. Here’s what you’ll need.

Choosing Your Chicken

For this recipe, you can use any cooked chicken you have on hand. Rotisserie chicken is a fantastic time-saver. You can also use baked or poached chicken breasts or thighs. Just be sure to shred or dice it into bite-sized pieces for even distribution throughout the casserole.

The Creamy Keto Sauce

This is the heart of the casserole. We combine full-fat cream cheese, heavy cream, and garlic powder to create a decadent base. A generous amount of shredded cheddar cheese is melted in to create a thick, bubbly sauce that coats every single ingredient.

Low-Carb Veggie Power

We’re using cauliflower florets as our primary vegetable. They provide a wonderful texture and bulk, mimicking traditional pasta or potatoes without the carbs. They become perfectly tender when baked and soak up all the delicious flavors of the sauce.

How to Make Keto Chicken Casserole (Step-by-Step)

Making this delicious Keto Chicken Casserole is a straightforward process. Just follow these simple steps for a perfect result every time. We’ve broken it down to ensure it’s easy for even the most novice cook.

  1. Preheat and Prep: Start by preheating your oven to 375°F (190°C). Grease a 9×13 inch baking dish and set it aside.
  2. Steam the Cauliflower: In a large microwave-safe bowl, steam the cauliflower florets with a splash of water for 5-7 minutes, or until they are just tender. Drain any excess water thoroughly to prevent a watery casserole.
  3. Create the Sauce: In a saucepan over medium heat, melt the cream cheese and heavy cream, stirring until smooth. Stir in the garlic powder, onion powder, salt, and pepper.
  4. Melt the Cheese: Reduce the heat to low and gradually stir in 1 cup of the shredded cheddar cheese until it’s completely melted and the sauce is smooth.
  5. Combine Everything: In a large bowl, combine the cooked chicken, steamed cauliflower, and the cheese sauce. Mix gently until everything is well-coated. For a delicious twist, try adding some crispy bacon like in our popular Bacon Cheeseburger Rice recipe.
  6. Bake to Perfection: Pour the mixture into your prepared baking dish. Sprinkle the remaining 1/2 cup of shredded cheddar cheese over the top. Bake for 20-25 minutes, or until the casserole is bubbly and the cheese on top is golden brown.

Let the casserole rest for a few minutes before serving. This allows it to set and makes serving much cleaner.

A close-up shot of a serving of cheesy low-carb chicken casserole on a plate, highlighting the creamy texture.
Look at that cheesy, creamy goodness!

Pro Tips for the Best Cheesy Chicken Bake

Want to take your low-carb chicken casserole to the next level? Here are a few expert tips to ensure it’s absolutely perfect.

  • Don’t Overcook the Veggies: Steam your cauliflower or broccoli until it’s “tender-crisp.” It will continue to cook in the oven, and this prevents it from becoming mushy.
  • Shred Your Own Cheese: Pre-shredded cheese often contains anti-caking agents that can make your sauce gritty. For the smoothest, meltiest results, buy a block of cheddar and shred it yourself.
  • Thoroughly Drain Vegetables: Any excess water in your steamed vegetables can lead to a thin sauce. Make sure to drain them completely before adding them to the casserole.

Delicious Keto Casserole Variations

This recipe is a fantastic base for creativity. Feel free to mix and match ingredients based on what you have on hand. For another great low-carb dinner idea, check out our Keto Eggplant Lasagna.

  • Broccoli & Bacon: Swap the cauliflower for broccoli florets and add a 1/2 cup of crumbled, cooked bacon to the mixture.
  • Spicy Jalapeño Popper: Add 1/4 cup of chopped pickled jalapeños and use a Colby Jack cheese blend for a spicy kick.
  • Chicken Bacon Ranch: Stir in 2 tablespoons of ranch seasoning mix into the sauce for that classic, irresistible flavor. If you love this combo, you’ll love our Chicken Bacon Ranch Sliders.
  • Mushroom & Swiss: Add 8 ounces of sautéed mushrooms and use shredded Swiss cheese instead of cheddar.

Storage, Freezing, and Reheating Instructions

This Keto Chicken Casserole is just as delicious the next day. Here’s how to properly store and reheat your leftovers.

  • To Store: Allow the casserole to cool completely. Store it in an airtight container in the refrigerator for up to 4 days.
  • To Freeze: You can freeze the entire casserole or individual portions. Wrap it tightly in plastic wrap and then aluminum foil. It can be frozen for up to 3 months. Thaw it overnight in the refrigerator before reheating.
  • To Reheat: For best results, reheat the casserole in the oven at 350°F (175°C) until it’s heated through, about 15-20 minutes. You can also reheat individual portions in the microwave.

What to Serve with Keto Chicken Casserole

This dish is a complete meal on its own, but it also pairs wonderfully with a variety of keto-friendly sides. A simple green salad with a vinaigrette dressing is a perfect fresh contrast. For another green side, try these amazing Honey Balsamic Brussels Sprouts (just use a keto-friendly sweetener). Steamed green beans or a side of roasted asparagus also work beautifully.

Frequently Asked Questions

Yes, this is a great recipe for meal prep. You can assemble the entire casserole, cover it, and store it in the refrigerator for up to 2 days before baking. You may need to add 5-10 minutes to the baking time if it’s going into the oven straight from the fridge.

Absolutely! Broccoli is another excellent low-carb vegetable that works perfectly in this recipe. You can substitute it for cauliflower in equal amounts. Simply steam it until tender-crisp before adding it to the casserole.

The key to a thick, creamy casserole is removing excess moisture from your vegetables. After steaming your cauliflower or broccoli, make sure to drain it thoroughly. Patting it dry with a paper towel can also help remove any lingering water.

Any cooked chicken works well! To save time, a store-bought rotisserie chicken is a fantastic option. You can also use leftover baked or grilled chicken breasts or thighs. Just make sure it’s shredded or cut into bite-sized pieces.

This casserole is keto-friendly because it uses low-carbohydrate ingredients. Instead of high-carb fillers like pasta, rice, or potatoes, we use cauliflower. The sauce is made from full-fat cream cheese, heavy cream, and cheese, which are all low in carbs and high in fat.

The Recipe

A close-up shot of a serving of cheesy low-carb chicken casserole on a plate, highlighting the creamy texture.

Keto Chicken Casserole (Easy, Cheesy & Delicious)

This Keto Chicken Casserole is the ultimate low-carb comfort food! Packed with tender chicken, cauliflower, and a rich, creamy cheese sauce, it's a quick, easy, and family-friendly dinner that's perfect for any night of the week.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American
Calories: 455

Ingredients
  

  • 4 cups cooked chicken shredded or diced
  • 5 cups cauliflower florets about 1 medium head
  • 8 oz cream cheese softened
  • 1/2 cup heavy cream
  • 1.5 cups shredded cheddar cheese divided
  • 1 tsp garlic powder
  • 1/2 tsp onion powder
  • 1/2 tsp salt or to taste
  • 1/4 tsp black pepper or to taste

Equipment

  • 1 9x13 inch Baking Dish
  • 1 Saucepan
  • 1 Large Mixing Bowl

Instructions
 

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
  2. Place cauliflower florets in a large, microwave-safe bowl with 2 tablespoons of water. Cover and microwave for 5-7 minutes, or until tender-crisp. Drain all excess water very well.
  3. In a medium saucepan over medium heat, combine the softened cream cheese and heavy cream. Stir frequently until the cream cheese is fully melted and the mixture is smooth.
  4. Stir in the garlic powder, onion powder, salt, and pepper. Reduce the heat to low and add 1 cup of the shredded cheddar cheese. Stir until the cheese is melted and the sauce is creamy.
  5. In a large bowl, combine the cooked chicken and the steamed, drained cauliflower. Pour the cheese sauce over the top and stir gently to coat everything evenly.
  6. Transfer the mixture to the prepared baking dish and spread it into an even layer. Sprinkle the remaining 1/2 cup of cheddar cheese over the top.
  7. Bake for 20-25 minutes, or until the casserole is hot and bubbly and the cheese topping is golden brown.
  8. Let the casserole cool for 5-10 minutes before serving. This helps it set.

Notes

Tip 1: For the best texture, shred your own cheese. Pre-shredded varieties contain additives that can make the sauce grainy.
Tip 2: Ensure the cauliflower is drained very well after steaming to prevent a watery casserole.
Tip 3: Rotisserie chicken is a great time-saver for this recipe.

Share Your Creation!

We know you’ll love this Keto Chicken Casserole as much as we do. It’s the perfect way to enjoy a hearty, comforting meal while sticking to your health goals. If you make this recipe, be sure to leave a comment below and let us know how it turned out! Don’t forget to save it to your favorite board on Pinterest!

A top-down view of a golden, bubbly Keto Chicken Casserole in a white baking dish, ready to be served.
The ultimate comfort food, made keto-friendly!

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