Ah, weeknight dinners! They can feel like such a whirlwind, right? Especially when you’re trying to keep things low-carb and healthy without sacrificing flavor. That’s exactly why I’m so excited to share this Creamy Low Carb Chicken Casserole with you. Trust me, this dish is a winner! It’s incredibly creamy, packed with savory goodness, and surprisingly simple to whip up. I remember the first time I made a low carb casserole for my family. I was a little nervous because my kids had grown accustomed to their favorite pasta dishes. I polished up a recipe for \”Creamy Low Carb Chicken Casserole\” and filled it with creamy goodness and fresh veggies. As the dish baked, the comforting aroma filled the house, drawing my kids in from their rooms. When dinnertime came, I served it with a side salad, and to my surprise, they couldn’t stop raving about it. It became a staple in our home, a reminder that with a little creativity, you can enjoy hearty comfort food without compromising on health. I’m Michael Davis, and as an MS, RD and Senior Meal Planning Specialist, I’ve seen firsthand how simple, delicious meals can change the way families eat. This casserole is proof!
Why You’ll Love This Creamy Low Carb Chicken Casserole
Seriously, who wouldn’t love a dish that’s:
- Super Easy to Make: Seriously, you’ll be done before you know it!
- Incredibly Flavorful: Creamy, cheesy, and oh-so-satisfying.
- Perfectly Low-Carb: Fits right into your healthy lifestyle.
- Family-Approved: Even picky eaters gobble it up!
- Great for Meal Prep: Make it ahead and enjoy leftovers all week.
Ingredients for Your Creamy Low Carb Chicken Casserole
Alright, let’s get down to business with the good stuff! Hereโs what youโll need to round up for this amazing Creamy Low Carb Chicken Casserole. Don’t worry, it’s all pretty standard stuff!
For the Casserole:
- 1/4 cup butter
- 1 pound chicken, cubed
- 5 ounces mushrooms, sliced
- 1/2 cup onion, chopped
- 1 tablespoon fresh thyme (or 1 teaspoon dried)
- 1 teaspoon sea salt
- 1/2 teaspoon fresh ground black pepper
- 1 teaspoon minced garlic
- 8 ounces frozen chopped spinach, thawed and drained well (this is important!)
- 1 cup chicken broth
- 8 ounces cream cheese, softened
For the Topping:
- 1 cup shredded Gruyere cheese (because Gruyere is just fancy and delicious!)
Step-by-Step Guide to Making the Creamy Low Carb Chicken Casserole
Alright, let’s get this party started! Making this Creamy Low Carb Chicken Casserole is way easier than you think. Just follow these steps, and you’ll have a bubbling, cheesy masterpiece in no time. I’ll even pop in a link to some awesome air fryer chicken recipes if you want to cook your chicken that way first!
Preheating and Initial Sautรฉ
First things first, crank your oven up to 350ยฐF (175ยฐC). Grab a nice big skillet, melt that butter over medium-high heat until it’s shimmering, and then toss in your cubed chicken. Let it brown up for about 5 minutes โ you want some nice color on there! Once it’s browned, scoop the chicken out and set it aside for a bit.
Building Flavor: Veggies and Seasonings
Now, into that same skillet (don’t clean it!), throw in your sliced mushrooms, chopped onion, thyme, salt, and pepper. Sautรฉ these goodies for about 6 minutes until they’re nice and softened. Then, add in that minced garlic and the well-drained spinach. Give it another 2 minutes, just until everything is fragrant and combined.
Creating the Creamy Sauce
Here’s where the magic happens! Pour in the chicken broth and then drop in your softened cream cheese. Stir it all around, letting that cream cheese melt into a luscious, creamy sauce. Keep stirring until it’s super smooth and all combined. Once that sauce is looking perfect, stir your browned chicken back into the pan.
Assembly and Baking
Now, transfer that glorious chicken and creamy sauce mixture into a casserole dish. Make sure it’s spread out evenly. Sprinkle that shredded Gruyere cheese all over the top โ I mean, come on, cheese!
Pop it into your preheated oven for about 25 to 30 minutes. You’re looking for that cheese to be golden brown and bubbly. Oh, and if you need more casserole inspiration, check out this other yummy keto chicken mushroom casserole!

Resting and Serving
Once it’s out of the oven and looking amazing, let it sit for about 5 minutes. This little rest lets everything settle and makes it easier to serve. Then, just dig in and enjoy your delicious, creamy, low-carb creation!

Tips for the Best Creamy Low Carb Chicken Casserole
So, you want your Creamy Low Carb Chicken Casserole to be absolutely perfect every single time? I’ve got you covered! It’s all about a few little tricks that make a big difference. First off, don’t skimp on draining that spinach! Seriously, waterlogged spinach is the enemy of a creamy, dreamy casserole. Pat it good and dry, okay? Also, using softened cream cheese is key โ it melts so much smoother that way. If you don’t have Gruyere, don’t fret! A sharp cheddar or even some Monterey Jack works beautifully. And for the love of all things delicious, don’t overcook the chicken before you add it to the sauce; it’ll finish cooking in the oven and stay super tender. If you want to get fancy with your chicken prep, check out these tips on how to make chicken recipes like a pro!
Ingredient Notes and Substitutions
Let’s dive a little deeper into some of the ingredients for this Creamy Low Carb Chicken Casserole. Sometimes brands or my pantry are a little different, so knowing options is awesome! For the chicken, I usually grab boneless, skinless chicken breasts or thighs, whatever I have on hand, and just cube it up. But honestly? Leftover rotisserie chicken would be a DREAM in here too! If you’re not a fan of Gruyere cheese (I mean, who isn’t?), a good sharp cheddar or even a Monterey Jack would be fantastic. And about the thyme โ fresh is wonderful, but if you only have dried, 1 teaspoon will do the trick perfectly. If you’re looking for more simple ingredient ideas, check out my list of 7-ingredient sandwich ideas; sometimes the simplest ingredients are the best!
Meal Prep and Storage for Creamy Low Carb Chicken Casserole
This Creamy Low Carb Chicken Casserole is a meal prep dream! You can totally get ahead of the game with this one. To make it ahead, just assemble the whole thing (up to the cheese topping!) in your casserole dish, cover it tightly with plastic wrap, and pop it into the fridge for up to 2 days. When you’re ready to bake, just add the cheese on top and bake as directed, adding a few extra minutes if needed. Leftovers? Oh yes! Let the casserole cool completely, then store it in an airtight container in the fridge for up to 3-4 days. Reheat individual portions in the microwave or pop the leftovers back into a warm oven until heated through. For longer storage, you can freeze portions of the baked and cooled casserole for up to 2 months. Just thaw in the fridge overnight and reheat. Need more ideas for prepping meals? Check out my guide on easy dinner recipes for meal prep! Easy peasy!
Frequently Asked Questions about Creamy Low Carb Chicken Casserole
Got questions about this Creamy Low Carb Chicken Casserole? I totally get it! You want this dish to be perfect, and I’m here to help. Here are some of the most common things people ask:
Can I add other vegetables to this casserole?
Absolutely! This recipe is super flexible. Feel free to toss in some chopped broccoli florets, bell peppers (any color!), zucchini, or even some cauliflower rice with the spinach. Just make sure they’re cut small enough so they cook through in the oven. It’s a great way to sneak in even more healthy goodness!
Is this Creamy Low Carb Chicken Casserole freezer-friendly?
Yes, it is! This casserole freezes like a dream. Let it cool completely after baking, then portion it into freezer-safe containers. It should last for up to 2 months in the freezer. Thaw it overnight in the fridge before reheating. Itโs perfect for those nights when youโre too tired to cook!
What can I serve with this casserole?
This Creamy Low Carb Chicken Casserole is pretty hearty on its own, but itโs also amazing with a simple side salad! A fresh green salad with a light vinaigrette is perfect. You could also serve it with some steamed asparagus or green beans for an extra veggie boost. For more healthy meal ideas, check out my roundup of healthy meal recipes!
Nutritional Information Estimate
Wondering about the deets? For this Creamy Low Carb Chicken Casserole, a single serving (which is about 1/6th of the dish) comes in around 389 calories. You’re looking at roughly 5.7g of carbs, 17.9g of protein, and a fantastic 33.5g of healthy fats. Keep in mind these are estimates, my friends! The exact numbers can tweak a bit depending on the specific brands you use. Talk about a satisfying meal!

Share Your Creamy Low Carb Chicken Casserole Creations!
Okay, so that’s my go-to Creamy Low Carb Chicken Casserole! I really hope you give it a try. If you do, oh my goodness, please come back and tell me all about it in the comments below! I absolutely love hearing from you and seeing how your casseroles turn out โ maybe even share a pic on social media! If you have any questions, don’t hesitate to ask. You can also reach out to me through my contact page. Happy cooking!

Creamy Low Carb Chicken Casserole
Ingredients
Equipment
Method
- Preheat oven to 350ยฐ F.
- Melt butter in a large skillet over medium-high heat.
- Add chicken and cook for 5 minutes, until browned. Remove from the skillet.
- Add the mushrooms, onion, thyme, salt, and pepper to the skillet. Cook for 6 minutes.
- Add garlic and spinach and cook for 2 minutes more.
- Add the chicken broth and cream cheese to the pan and cook until the cream cheese melts.
- Stir in the chicken.
- Transfer the mixture to a casserole dish and top with cheese.
- Bake for 25 to 30 minutes, until golden brown.
- Remove from heat and allow to sit for 5 minutes before serving.




