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Low Carb Creamy Chicken Casserole for a Healthy Dinner | Recipes By Mami
Everyday Eats Chicken Casserole Low carb

Low Carb Creamy Chicken Casserole for a Healthy Dinner

Kaelen Thorne Kaelen Thorne Mar 16, 2026 4.1 (58)
Prep Time: 15 min Cook Time: 35 min Total Time: 50 min 6 Servings Beginner

Low carb creamy chicken casserole packed with flavor. This easy, healthy dinner is perfect for busy weeknights and keto-friendly. A satisfying family meal.

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Oh, hey there, friend! You know how sometimes you just crave something cozy, something that feels like a hug in a bowl, but you're also trying to keep things on the lighter side? That was me a few years back. I was searching for a dish that hit all those comfort notes without the carb overload, and that's how this amazing Low Carb Chicken Casserole came into my life. It’s been a staple ever since!

One time, I was so excited to get this casserole in the oven, I completely forgot to add the Dijon mustard! I pulled it out, took a bite, and thought, 'Hmm, something's missing.' It was still good, but that little tangy kick wasn't there. Oops! Now, I always double-check my ingredients list before that final stir. Lesson learned, my friends!

Ingredients for a Dreamy Low Carb Chicken Casserole

  • 2 lbs cooked chicken breast, shredded or diced: This is your star player, hon! I usually cook up a big batch of chicken on Sunday, just for recipes like this. Shredded gives you that lovely pull-apart texture, while diced makes for neat, chunky bites. Either way, make sure it’s cooked and ready to go. It’s what makes this a speedy weeknight Low Carb Chicken Casserole!
  • 4 cups broccoli florets, fresh or frozen: Broccoli is my go-to green for this. It adds a lovely pop of color and a bit of a bite that stands up to all that creaminess. Fresh is awesome, but honestly, frozen works just as well and saves a step. Just make sure to thaw it a bit if using frozen, so it doesn't water down your amazing Low Carb Chicken Casserole sauce.
  • 8 oz cream cheese, softened: Hello, creamy dreaminess! This is where the magic happens. Make sure your cream cheese is softened, otherwise, you'll be fighting lumps, and nobody wants that. I’ve tried to rush it before, and let me tell you, it's not a fun time. Let it sit out on the counter while you prep everything else, you'll thank me later.
  • 1/2 cup heavy cream: For that extra layer of richness and velvety texture, heavy cream is your best friend. It helps create that luscious sauce that coats every piece of chicken and broccoli. Don't skimp on this one if you want that truly decadent, yet still low carb, feel. It just brings everything together so beautifully.
  • 1 tbsp Dijon mustard: Okay, this is my secret weapon! A little bit of Dijon mustard might seem odd, but it doesn't make the casserole taste like mustard, I promise. Instead, it adds a subtle tang and depth that brightens up the whole dish and keeps it from being too one-note. It's that 'what IS that amazing flavor?' ingredient.
  • 1/2 cup yellow onion, finely diced & 2 cloves garlic, minced: These two are the foundation of almost every good savory dish, right? Sautéing them until fragrant builds a fantastic aromatic base for our Low Carb Chicken Casserole. The sweet onion and pungent garlic mellow out and blend into the creamy sauce, giving it that homey, comforting flavor we all adore. Don't rush this step!

Whipping Up Your Low Carb Chicken Casserole: The Steps

Step 1: Preheat Oven & Prep:
First things first, get that oven nice and toasty to 375°F (190°C). While it's heating up, grab your favorite 9x13 inch baking dish and give it a quick spray with cooking oil. This little step makes cleanup so much easier, trust me! Having everything prepped and ready before you start cooking is my number one rule for a smooth kitchen experience, especially when you're excited to dig into a delicious Low Carb Chicken Casserole.
Step 2: Sauté Onion & Garlic:
Now for the good smells! In a large skillet over medium heat, add a splash of oil and toss in your finely diced yellow onion. Let it soften and turn translucent, about 3-5 minutes, stirring occasionally. Then, add your minced garlic and cook for just another minute until it's fragrant. Don't let it burn, hon! That golden aroma is the start of the incredible flavor in our Low Carb Chicken Casserole.
Step 3: Whisk Creamy Sauce:
Time to make the magic happen! In a large bowl, combine your softened cream cheese, heavy cream, low-sodium chicken broth, and full-fat sour cream. Give it a good whisk until it's smooth and lump-free. Then, stir in that Dijon mustard, garlic powder, and a pinch of salt and pepper. This is the heart of your creamy sauce, and it's what makes this Low Carb Chicken Casserole so incredibly decadent.
Step 4: Mix Casserole Base:
Once your sauce is velvety smooth, add your cooked chicken, broccoli florets, and the sautéed onion and garlic to the bowl. Gently fold everything together until all the ingredients are beautifully coated in that rich, creamy sauce. You want every piece to get a taste of that goodness! This is where you can see your amazing Low Carb Chicken Casserole really starting to come together.
Step 5: Assemble & Top Cheese:
Pour that glorious mixture into your prepared baking dish, spreading it out evenly. Make sure it's nestled in there nicely. Now, for the best part (in my opinion!): sprinkle a generous layer of shredded cheese over the top. I usually go with cheddar or a cheddar-jack blend, but honestly, any good melting cheese will do. That golden, bubbly crust is what we're aiming for, my friend!
Step 6: Bake Casserole Golden:
Pop your casserole into the preheated oven and bake for 25-30 minutes. You're looking for it to be hot and bubbly all around the edges, with that gorgeous, golden-brown cheese crust on top. Oh, the aroma that fills your kitchen! It's pure comfort. This is the moment your Low Carb Chicken Casserole transforms into a masterpiece.

Honestly, making this Low Carb Chicken Casserole feels like a warm hug from start to finish. From the moment the onions hit the pan and the garlic sizzles, to whisking that creamy sauce, it's just pure kitchen joy. And when it comes out of the oven, bubbling and golden, the smell alone is enough to make your mouth water. It's a dish that brings comfort and a big smile every single time.

Keeping Your Low Carb Chicken Casserole Fresh

So, you've got some glorious leftovers of this Low Carb Chicken Casserole? Lucky you! Once completely cooled, transfer any remaining casserole to an airtight container. It'll keep beautifully in the fridge for up to 3-4 days. Reheating is easy: a quick zap in the microwave or pop it back in the oven until warmed through. I've made the mistake of trying to freeze it with too much liquid before, and it can get a little watery when thawed. If freezing, make sure your sauce is extra thick, or plan to add a splash of cream when reheating. It's still tasty, just a texture thing!

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Swapping Ingredients for Your Low Carb Chicken Casserole

I've played around with this Low Carb Chicken Casserole recipe a fair bit, trying different things. If broccoli isn't your jam, cauliflower florets or even a mix of green beans and spinach work wonderfully just make sure to squeeze out excess water from spinach. For cheese, cheddar-jack is my go-to, but provolone, mozzarella, or even a smoked gouda would be divine. I've also swapped chicken for cooked turkey after Thanksgiving, and it was a hit! Just keep the quantities similar, and you're golden. Don't be afraid to experiment, that's half the fun of cooking, right?

Serving Ideas for the Perfect Low Carb Chicken Casserole

This Low Carb Chicken Casserole is pretty much a meal in itself, but sometimes you want a little something extra on the side, you know? A crisp green salad with a light vinaigrette is perfect for cutting through the richness. Or, if you're feeling fancy, some roasted asparagus or green beans would be lovely. For a heartier low-carb option, a side of cauliflower rice is fantastic for soaking up any extra sauce. A glass of crisp white wine or even a sparkling water with lemon would round out this comforting meal beautifully.

The Comforting Roots of Low Carb Chicken Casserole

Casseroles, especially creamy chicken ones, are such a cornerstone of American comfort food, aren't they? They've been gracing dinner tables for generations, a symbol of hearty, easy family meals. This Low Carb Chicken Casserole is a modern twist on that beloved tradition, adapting it for today's dietary preferences without sacrificing any of the warmth or deliciousness. It's about taking those familiar, comforting flavors and making them work for a healthier lifestyle. It's still that same hug from grandma's kitchen, just a little lighter around the edges!

And there you have it, my friends! Your very own, incredibly delicious Low Carb Chicken Casserole. It's truly one of those recipes that just warms your soul and makes you feel good, inside and out. I hope you love making and eating it as much as I do. Don't forget to come back and tell me all about your experience in the comments below! Happy cooking!

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Low Carb Creamy Chicken Casserole for a Healthy Dinner - Image 2 | Recipes By Mami

Your Questions About Low Carb Chicken Casserole, Answered!

Can I make this Low Carb Chicken Casserole ahead of time?

Absolutely! You can assemble the entire casserole, cover it tightly, and refrigerate it for up to 24 hours before baking. Just add an extra 5-10 minutes to the baking time since it will be going into the oven cold. It's a lifesaver for busy days!

What if I don't have heavy cream?

While heavy cream gives the best richness, you could try using half-and-half in a pinch, though the sauce might be a little thinner. For a low-carb alternative, full-fat coconut cream (from a can, not a carton) could work, but it will add a slight coconut flavor.

Can I add other vegetables to this Low Carb Chicken Casserole?

Yes, get creative! Sautéed mushrooms, chopped bell peppers, or even a handful of spinach (wring out extra water!) would be lovely additions. Just make sure any harder veggies are cooked until tender-crisp before adding to the mix.

How do I avoid a watery casserole?

Great question! Make sure your broccoli (especially if frozen) is thawed and well-drained. Also, ensure your chicken isn't overly moist. The cream cheese and heavy cream base should be thick enough to hold everything together beautifully, creating a perfect Low Carb Chicken Casserole.

Is this recipe freezer-friendly?

It can be! For best results, I'd suggest baking it first, letting it cool completely, then freezing individual portions. Thaw overnight in the fridge and reheat gently in the oven or microwave. The texture might change slightly, but it's still delicious for a quick meal.

Recipe

Low Carb Creamy Chicken Casserole for a Healthy Dinner

Low carb creamy chicken casserole packed with flavor. This easy, healthy dinner is perfect for busy weeknights and keto-friendly. A satisfying family meal.

4.1 (58 reviews)
15 min
Prep Time
35 min
Cook Time
50 min
Total Time
6 Servings
Servings
Beginner
Difficulty
American
Cuisine
Gluten-Free Diabetic-Friendly

Ingredients

Shredded Chicken & Verdant Bites

  • 2 lbs cooked chicken breast, shredded or diced
  • 4 cups broccoli florets, fresh or frozen

The Rich & Creamy Embrace

  • 8 oz cream cheese, softened
  • 1/2 cup heavy cream
  • 1/2 cup chicken broth (low sodium)
  • 1/4 cup sour cream (full fat)
  • 1 tbsp Dijon mustard

Aromatic Depth & Savory Spark

  • 1/2 cup yellow onion, finely diced
  • 2 cloves garlic, minced
  • 1 tsp garlic powder
  • 1/2 tsp dried thyme
  • Salt and black pepper to taste

Golden Cheesy Crown

  • 1 1/2 cups shredded cheddar cheese, divided
  • 1/2 cup grated Parmesan cheese

Instructions

  1. 1
    Preheat Oven & Prep
    Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish. Prepare 1/2 cup yellow onion, finely diced, and 2 cloves garlic, minced. Ensure 4 cups broccoli florets are ready for assembly.
  2. 2
    Sauté Onion & Garlic
    In a large skillet over medium heat, sauté the 1/2 cup yellow onion until softened, about 3-5 minutes. Add the 2 cloves garlic, minced, and cook for another minute until fragrant, being careful not to burn.
  3. 3
    Whisk Creamy Sauce
    Reduce heat to low. Add 8 oz cream cheese, softened, 1/2 cup heavy cream, 1/2 cup chicken broth, 1/4 cup sour cream, and 1 tbsp Dijon mustard to the skillet. Whisk until smooth. Stir in 1 tsp garlic powder, 1/2 tsp dried thyme, and season with salt and black pepper to taste. This forms the heart of your Creamy Low Carb Chicken Casserole.
  4. 4
    Mix Casserole Base
    Remove the skillet from heat. Fold in 2 lbs cooked chicken breast, shredded or diced, and 4 cups broccoli florets. Add 1 cup of the 1 1/2 cups shredded cheddar cheese and mix well to coat all ingredients evenly with the creamy sauce.
  5. 5
    Assemble & Top Cheese
    Transfer the chicken and broccoli mixture into the prepared baking dish. Sprinkle the remaining 1/2 cup shredded cheddar cheese and 1/2 cup grated Parmesan cheese evenly over the top. This golden crown will complete your Creamy Low Carb Chicken Casserole.
  6. 6
    Bake Casserole Golden
    Bake for 25-30 minutes, or until the casserole is bubbly around the edges and the cheese topping is melted and golden brown. For the perfect Creamy Low Carb Chicken Casserole, ensure it's heated through.
  7. 7
    Rest Before Serving
    Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the sauce to set slightly, making it easier to portion and enjoy its rich, creamy texture.

Notes

1

For quicker prep, use pre-cooked rotisserie chicken and steam frozen broccoli florets slightly before adding to the mix.

2

Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat gently in the microwave or oven.

3

Feel free to customize with other low-carb vegetables like cauliflower, spinach, or mushrooms. You can also swap cheddar for Monterey Jack or a blend.

4

Serve this hearty casserole on its own or alongside a simple green salad with a light vinaigrette for a complete meal.

Equipment

9x13 inch baking dish Large mixing bowl Cutting board Knife Measuring cups and spoons

Please check ingredients for potential allergens and consult a health professional if in doubt.

Dairy Mustard

Nutrition Facts

660 kcal
Calories
40 g
Fat
9 g
Carbs
59 g
Protein

It is important to consider this information as approximate and not to use it as definitive health advice.

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Low Carb Creamy Chicken Casserole for a Healthy Dinner

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