Picture this: It’s been a long day. You’re hungry, maybe even “hangry,” and the thought of whipping up a complicated, keto-compliant dinner makes you want to crawl under a blanket. Sound familiar? We’ve all been there! But what if we told you that your dinner dilemma is about to meet its delicious, low-carb match? Get ready to say hello to the ultimate comfort food that won’t derail your keto journey: the sensational Keto Chicken Mushroom Casserole! Forget boring meals; this dish is packed with creamy, savory goodness, tender chicken, earthy mushrooms, and a gooey cheese topping that will have your taste buds doing a happy dance. It’s so good, you might just forget it’s healthy!

Why You’ll Love This Keto Chicken Mushroom Casserole

This isn’t just another dinner recipe; it’s a culinary hug in a dish! Here are four irresistible reasons why our Keto Chicken Mushroom Casserole will become your new go-to:

Keto-Friendly Dream: With incredibly low net carbs and a generous fat and protein content, this casserole is perfectly tailored for your ketogenic lifestyle. It keeps you full, satisfied, and squarely in ketosis without sacrificing flavor.

Uncomplicated Comfort: Who has time for complex cooking after a busy day? This recipe is wonderfully straightforward, designed for ease without compromising on taste. It delivers all the hearty, comforting vibes of a traditional casserole with minimal fuss.
Explosion of Flavor: From the tender shredded chicken to the savory sautéed mushrooms and the rich, creamy sauce, every spoonful is a delight. The blend of garlic, onion, and a cheesy mozzarella topping creates a symphony of flavors that will have everyone asking for seconds.

Meal Prep Marvel: This casserole is a fantastic candidate for meal prepping. Whip up a batch on Sunday, and you’ll have delicious, wholesome, low-carb meals ready to go for days, making healthy eating effortless and convenient.

Ingredients for Your Keto Chicken Mushroom Casserole

Gather your simple yet mighty ingredients to create this low-carb masterpiece:

🐔 6 cups cooked shredded chicken
🧈 1 tbsp butter
🫒 1 tbsp olive oil
🧅 1/2 small onion (sliced)
🧄 1 clove garlic (chopped)
🍄 12 oz white mushrooms (sliced)
🥣 4 oz beef broth
🧀 4 oz cream cheese (cut into cubes)
🥛 2 oz heavy cream
🧂 1/2 tsp salt
🌶️ 1/4 tsp pepper
🧀 1 cup shredded mozzarella

Step-by-Step Directions: How to Make Your Keto Chicken Mushroom Casserole

Let’s get cooking! Follow these easy steps to bring your delightful Keto Chicken Mushroom Casserole to life:

Prepare Your Dish: Preheat your oven to a warm 400°F (200°C). Lightly grease a 9×13 inch casserole dish. Spread the cooked shredded chicken evenly across the bottom. This forms the delicious base of your casserole.
Sauté the Aromatics: In a large skillet, melt the butter with the olive oil over medium heat until it shimmers. Add the sliced onion and chopped garlic, cooking until they’re soft and fragrant, about 3-5 minutes. Your kitchen will start to smell amazing!

Add the Mushrooms: Stir in the sliced white mushrooms and continue to cook until they’re tender. Don’t worry about any liquid from the mushrooms; it adds great flavor to your sauce!
Layer the Goodness: Spoon this delicious mushroom, onion, and garlic mixture evenly over the chicken in your casserole dish.
Craft the Creamy Sauce: Return to the skillet and pour in the beef broth. Add the cubed cream cheese, stirring until it starts to melt into the broth, creating a luscious foundation for your sauce.

Smooth & Season: Stir in the heavy cream, salt, and pepper. Continue stirring until the sauce is beautifully smooth and well combined. For an extra silky texture, you can use an immersion blender directly in the skillet, but it’s not essential.
Pour and Top: Generously pour this creamy sauce over the chicken and mushrooms in your casserole dish, ensuring everything is well coated. Finish by sprinkling the shredded mozzarella cheese evenly across the top – get ready for that golden, bubbly crust!
Bake to Perfection: Bake for 20-25 minutes, or until the casserole is hot, bubbly, and the cheese is gloriously golden and melted.

Serve & Enjoy! Let it rest for a few minutes before serving to allow the sauce to set slightly.

Presenting and Serving Your Keto Chicken Mushroom Casserole

While this Keto Chicken Mushroom Casserole is a star on its own, a little presentation can make it even more appealing. Here are some fun ways to serve and present your culinary masterpiece:

Elegantly Simple: Serve individual portions directly onto plates. Garnish with a sprinkle of fresh chopped parsley or chives for a pop of color and fresh flavor.

Side Dish Savvy: This casserole pairs beautifully with a simple, crisp green salad dressed with a vinaigrette. Other fantastic low-carb sides include steamed asparagus, roasted broccoli, or a side of cauliflower rice to soak up every drop of that creamy sauce.
Family Style Feast: Bring the entire hot, bubbly casserole dish straight to the table! It’s an inviting centerpiece that encourages everyone to dig in and serve themselves.
Personalized Touch: Offer a small bowl of optional toppings on the side, like a dollop of sour cream, a sprinkle of red pepper flakes for those who like a kick, or even some extra shredded parmesan cheese.

Lunchbox Hero: This casserole reheats wonderfully, making it perfect for packing into individual containers for a satisfying keto lunch throughout the week.

Storing Your Keto Chicken Mushroom Casserole

One of the best things about a hearty casserole is its excellent shelf life, making it ideal for meal prep! Here’s how to store your delicious Keto Chicken Mushroom Casserole:

Refrigeration: Once cooled, transfer any leftovers to an airtight container. It will keep beautifully in the refrigerator for up to 3-4 days. When reheating, you can microwave individual portions or warm it gently in the oven at 350°F (175°C) until heated through.

Freezing: This casserole freezes exceptionally well. For best results, allow the casserole to cool completely. You can freeze it as a whole in a freezer-safe casserole dish (covered tightly with foil and then plastic wrap) or portion it out into individual freezer-safe containers. It will last in the freezer for 2-3 months.
Thawing & Reheating from Frozen: To reheat from frozen, it’s best to thaw it in the refrigerator overnight. Once thawed, you can reheat it in the oven at 350°F (175°C) until hot and bubbly, usually for 25-35 minutes. If reheating from frozen without thawing, it will take longer (around 45-60 minutes) at a slightly lower temperature (325°F/160°C) to ensure it heats evenly without drying out.

Frequently Asked Questions About Keto Chicken Mushroom Casserole

Can I use pre-cooked rotisserie chicken?
Absolutely! Using pre-cooked rotisserie chicken or leftover roast chicken is a fantastic time-saver and works perfectly for this recipe. Just make sure you have 6 cups of shredded chicken.

What kind of mushrooms can I use besides white mushrooms?
Feel free to experiment! Cremini (baby bella) mushrooms offer a deeper, earthier flavor. Sliced shiitake mushrooms would also be delicious, or even a mix of your favorite wild mushrooms for added complexity.
Can I substitute cream cheese with something else?
Cream cheese provides the signature creamy texture and tang. While not a direct substitute for the texture, you could try using full-fat mascarpone for a richer flavor, or even a blend of sour cream and a bit of parmesan for a different creamy consistency, though this might alter the carb count slightly.
Is this Keto Chicken Mushroom Casserole dairy-free?
No, this recipe is not dairy-free as it contains butter, cream cheese, heavy cream, and mozzarella. To make it dairy-free, you would need to use plant-based alternatives for all these ingredients.

How can I make this casserole spicier?
For a kick, you can add a pinch of red pepper flakes with the salt and pepper, or a dash of your favorite hot sauce to the creamy sauce. You could also include finely diced jalapeños with the onions and garlic.
Can I prepare this casserole ahead of time?
Yes! You can assemble the entire casserole (up to sprinkling the mozzarella) and store it covered in the refrigerator for up to 24 hours before baking. Just add an extra 5-10 minutes to the baking time if baking from chilled.
What are the net carbs in this recipe?
Based on the provided nutrition, this Keto Chicken Mushroom Casserole has 3.6g net carbs per serving, making it an excellent choice for a ketogenic diet.

Can I use a different type of cheese for the topping?
Certainly! While mozzarella offers that classic stringy, melty goodness, you could also use cheddar, provolone, or a blend of Italian cheeses for a different flavor profile.
Why is the beef broth important in the sauce?
The beef broth adds depth of flavor (umami) to the sauce and helps thin out the cream cheese and heavy cream to create a pourable, smooth consistency. Chicken broth can be used as a substitute if preferred.
What if I don’t have an immersion blender for the sauce?
No worries at all! An immersion blender is just for an “extra silky texture.” As long as you stir the cream cheese into the broth until it’s well melted and then incorporate the heavy cream, your sauce will still be beautifully smooth and delicious.