After a long day filled with meetings and to-do lists, there’s nothing quite like the comfort of a warm, homemade meal waiting for you. I recently found myself craving something hearty yet uncomplicated, and that’s when this Low Carb Chicken Casserole came to the rescue. The rich aroma of garlic mingling with sautéed bell peppers filled my kitchen, creating an enticing invitation for a cozy dinner.
This dish is not just a straightforward recipe; it’s a symphony of flavors that transforms simple ingredients into a culinary delight. With just a handful of items like tender chicken breasts, vibrant veggies, and creamy cheese, you can create a casserole that looks and feels special, but comes together effortlessly—perfect for anyone looking to break free from the repetitive cycle of fast food.
So, if you’re searching for a satisfying, low-carb option that pleases the entire family, let’s dive into the steps of making this comforting classic!
Why You'll Love This Chicken Casserole
- This Chicken Casserole is incredibly easy to make, allowing you to whip up a delicious meal without the hassle.
- The rich combination of garlic, bell peppers, and creamy cheese creates a flavor explosion that will have everyone asking for seconds.
- Its versatility makes it suitable for any occasion, whether it’s a weeknight dinner or a potluck with friends.
- Plus, this dish is visually appealing, with its vibrant colors and inviting aroma that fill your kitchen with warmth.
Chicken Casserole Ingredients
• Dive into making this delightful Chicken Casserole with these simple yet flavorful ingredients!
For the Chicken
• Boneless, skinless chicken breasts – a tender choice that ensures juicy bites in every serving.
For the Vegetables
• Fresh garlic – minced for a robust flavor that melds beautifully with the cream.
• Red bell pepper – adds a touch of sweetness and vibrant color.
• Green bell pepper – brings a slightly earthy note that balances the dish.
• Onion – sautéed to enhance sweetness and depth in the casserole.
For the Sauce
• Heavy cream – provides a rich, luscious base that binds all the ingredients together.
• Italian seasoning – a blend that imparts a fragrant herbal essence, elevating the dish.
For the Topping
• Shredded sharp cheddar cheese – melts into a gooey topping that adds not just flavor, but also comfort!
To Taste
• Salt and pepper – essential for enhancing the overall flavors of the Chicken Casserole.

How to Make Chicken Casserole
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Preheat your oven to 375°F (190°C) and spray a baking dish with nonstick cooking spray. This ensures your casserole won’t stick and makes for easy cleanup!
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Season the chicken breasts generously with salt and pepper, then place them snugly in the prepared baking dish. This step infuses flavor into your chicken, making it succulent and satisfying.
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Sauté the onion and bell peppers in a skillet over medium heat until tender, about 5 minutes. The vibrant colors and sweet aroma will fill your kitchen, setting the scene for a delicious meal.
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Mix together the heavy cream, minced garlic, and Italian seasoning in a bowl. Pour this creamy mixture over the chicken and veggies, basking them in aromatic goodness that will blend beautifully as it bakes.
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Top the casserole with shredded cheddar cheese, spreading it evenly. This will melt into a gooey, delightful layer that adds both charm and flavor to your culinary creation.
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Bake for 30-35 minutes until the chicken reaches an internal temperature of 165°F (74°C) and the cheese is golden brown. Your home will be filled with the irresistible scent of comforting food!
Optional: Garnish with fresh herbs for an extra pop of color and flavor.
Exact quantities are listed in the recipe card below.
Chicken Casserole Variations
Feel free to explore these delightful twists on the classic Chicken Casserole, allowing your creativity to shine!
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Dairy-Free: Substitute heavy cream with full-fat coconut milk and use dairy-free cheese for a creamy base that’s also vegan-friendly.
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Spicy Kick: Add diced jalapeños or crushed red pepper flakes to the sautéed vegetables for a fiery twist that will tantalize the taste buds.
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Veggie-Loaded: Toss in more vegetables like zucchini, mushrooms, or spinach for added nutrition and flavor, making the casserole even more colorful.
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Herbed Delight: Swap Italian seasoning for fresh herbs like thyme, rosemary, or basil to introduce a fragrant, garden-fresh taste.
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Crunchy Topping: Sprinkle crushed pork rinds or finely chopped nuts on top before baking for a crunchy, delightful contrast to the creamy casserole.
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Cheesy Variation: Experiment with different types of cheese like mozzarella or pepper jack for a melty experience that adds your favorite flavors.
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Cauliflower Rice Base: Replace chicken with riced cauliflower for a lighter, low-carb option that maintains the comfort of a casserole.
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Mediterranean Flavor: Incorporate olives, sun-dried tomatoes, and feta cheese for a Mediterranean twist, turning your casserole into an exotic treat!
Make Ahead Options
These Low Carb Chicken Casseroles are perfect for meal prep enthusiasts! You can season and place the chicken breasts in the baking dish up to 24 hours in advance; simply cover and refrigerate to keep them fresh and flavorful. The sautéed onion and bell peppers can also be prepared ahead of time (store them in an airtight container in the fridge for a maximum of 3 days). When it’s time to cook, mix the cream, garlic, and Italian seasoning, pour it over the chicken and veggies, add the cheese, and bake as instructed. This way, you’ll enjoy a comforting, homemade meal with minimal evening effort, just as delicious as if made fresh!
Storage Tips for Chicken Casserole
Fridge: Store leftover Chicken Casserole in an airtight container for up to 3 days. This keeps it fresh and ready to enjoy again!
Freezer: For longer storage, freeze individual portions of Chicken Casserole in freezer-safe containers for up to 3 months. Thaw in the fridge before reheating.
Reheating: Reheat in the oven at 350°F (175°C) until warmed through, about 20-25 minutes. You can also microwave in short intervals, covered, for quicker warmth.
Room Temperature: Avoid leaving the casserole out for more than 2 hours to prevent foodborne illness; always refrigerate promptly if not consuming immediately.
What to Serve with Chicken Casserole?
Transform your comforting casserole into a full-fledged feast with these delightful pairings.
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Garlicky Green Beans: Fresh green beans sautéed with garlic add a lovely crunch and a burst of freshness. They balance the richness of the casserole beautifully.
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Cauliflower Rice: A light and fluffy alternative to traditional rice, this low-carb option provides a neutral base that soaks up the casserole’s creamy sauce.
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Simple Side Salad: Crisp greens tossed with a zingy vinaigrette introduce a refreshing contrast to the dish’s warmth and creaminess, creating a balanced meal.
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Roasted Brussels Sprouts: Crisped with olive oil and balsamic glaze, these sprouts add a delightful, earthy flavor and a satisfying texture that complements the casserole.
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Creamy Coleslaw: The cool, crunchy cabbage with a tangy dressing offers a great contrast to the casserole’s warmth, bringing a refreshing bite.
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Cheesy Biscuits: Fluffy, buttery biscuits are perfect for sopping up the creamy goodness of the casserole. Plus, they add an extra layer of indulgence!
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Chilled White Wine: A crisp Sauvignon Blanc pairs wonderfully with the casserole, cutting through the richness while enhancing the meal’s flavors.
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Dark Chocolate Mousse: End your meal on a sweet note with a rich, velvety mousse that rounds out the comforting experience with a hint of decadence.
Chef's Helpful Tips
- When preparing the Chicken Casserole, ensure you season the chicken breasts evenly to maximize flavor in every bite.
- To achieve maximum tenderness, let the chicken rest for a few minutes after taking it out of the oven before serving.
- When sautéing the vegetables, make sure not to overcrowd the pan as this can lead to steaming instead of sautéing, diminishing their flavor.
- Always use a meat thermometer to check that the chicken has reached the safe internal temperature of 165°F (74°C) for perfect doneness every time.
Chicken Casserole Recipe FAQs
How do I choose the best chicken breasts for this casserole?
Absolutely! When selecting chicken breasts, look for ones that are plump and slightly shiny. Avoid any that have a strong odor or dark spots all over, which could indicate spoilage. Fresh chicken should have a mild smell and be pink in color.
How should I store leftover Chicken Casserole?
Very easy! Store any leftover Chicken Casserole in an airtight container in the refrigerator for up to 3 days. Ensure it’s completely cooled before sealing to maintain freshness.
Can I freeze the Chicken Casserole? If so, how?
Definitely! To freeze your Chicken Casserole, first let it cool completely. Then, portion it into freezer-safe containers or wrap it tightly in plastic wrap and aluminum foil. It can stay in the freezer for up to 3 months. When you’re ready to enjoy it again, thaw it in the refrigerator overnight before reheating.
What if my casserole comes out a little dry?
No worries! If you notice that your casserole turned out a bit dry, it could be due to overcooking. Ensure your chicken reaches just 165°F (74°C) as anything beyond that can dry it out. For a creamier texture, you can stir in a splash more heavy cream or a dollop of sour cream right before serving to add moisture back in.
Are there any dietary considerations for this casserole?
Absolutely, be mindful of any allergies! This Chicken Casserole contains dairy, so those with lactose intolerance need to be cautious. Additionally, make sure your cheese and cream are from a trusted source if serving to anyone with dietary restrictions, including lactose-free alternatives if needed. For a gluten-free option, all the ingredients listed are gluten-free, making it a great meal choice!

Chicken Casserole
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C) and spray a baking dish with nonstick cooking spray.
- Season the chicken breasts generously with salt and pepper, then place them snugly in the prepared baking dish.
- Sauté the onion and bell peppers in a skillet over medium heat until tender, about 5 minutes.
- Mix together the heavy cream, minced garlic, and Italian seasoning in a bowl. Pour this creamy mixture over the chicken and veggies.
- Top the casserole with shredded cheddar cheese, spreading it evenly.
- Bake for 30-35 minutes until the chicken reaches an internal temperature of 165°F (74°C) and the cheese is golden brown.




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