After a long day, there's nothing more comforting than a dish that warms not just your belly but also your soul. That’s where my Low Carb Chicken Casserole comes in, transforming simple ingredients into an irresistible feast. The moment the rich aroma of garlic and fresh vegetables fills my kitchen, I know I’m in for a treat.
This casserole is a delightful surprise: it’s low in carbs yet packed with flavor, making it a perfect solution for those hectic weeknights or any time you crave a homestyle meal without the guilt. Using tender chicken, vibrant bell peppers, and creamy sauce, it's a crowd-pleaser that everyone can enjoy. Mix everything in one baking dish, pop it in the oven, and let the magic happen. You'll be amazed at how effortlessly it comes together!
So, whether you’re a busy professional, a devoted home cook, or someone tired of fast food, this Low Carb Chicken Casserole is your ticket to a delicious homemade dinner that makes you feel like a culinary superstar. Dive into the recipe and discover how easy it is to create a substantial, satisfying meal!
Why You'll Love This Chicken Casserole
- This Chicken Casserole is incredibly easy to prepare, making it perfect for busy weeknights when you want a home-cooked meal without the hassle.
- The rich flavor of the creamy sauce combined with tender chicken and fresh vegetables creates a dish that will tantalize your taste buds.
- Its versatility allows you to customize the veggies or adjust the seasoning to suit your family's preferences while still adhering to a low-carb lifestyle.
- Visually appealing with a colorful medley of ingredients, this casserole is not only a feast for the eyes but also a guaranteed hit at the dinner table.
Chicken Casserole Ingredients
• Get ready to create magic with these simple ingredients!
For the Chicken
• Boneless, skinless chicken breasts – lean protein that stays juicy and delicious during baking.
For the Vegetables
• Fresh garlic – adds an aromatic punch and depth to your casserole.
• Bell peppers – vibrant colors and sweet flavor enhance texture and visual appeal.
• Zucchini – brings a subtle crunch while keeping the casserole low in carbs.
For the Sauce
• Heavy cream – ensures a rich, velvety base that binds all the flavors together.
• Low-sodium soy sauce – adds a savory depth without overwhelming saltiness.
• Dijon mustard – infuses a tangy kick that brightens up the creamy sauce.
• Salt and pepper – essential for seasoning to elevate all the flavors in your chicken casserole.

How to Make Chicken Casserole
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Preheat the oven: Start by warming your oven to 400°F (200°C). This ensures your casserole cooks evenly and thoroughly. Don't forget to spray your baking dish with nonstick cooking spray to avoid sticking.
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Season the chicken: Generously sprinkle salt and pepper over the boneless, skinless chicken breasts. This simple step enhances the flavor of the chicken, making every bite delightful.
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Chop the vegetables: Dice the bell peppers into bite-sized pieces and slice the zucchini thinly. This colorful medley adds nutrition and sweetness to your casserole, creating a dish that's as pleasing to the eye as it is to the palate.
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Whisk the sauce: In a mixing bowl, combine heavy cream, low-sodium soy sauce, Dijon mustard, minced garlic, and a pinch of salt and pepper. Whisk until the mixture is smooth and creamy, bringing together a flavor-packed sauce for your chicken and veggies.
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Combine in baking dish: Place the seasoned chicken breasts in the greased baking dish and scatter the chopped bell peppers and zucchini around them. Pour the creamy sauce over everything, ensuring an even coating for maximum flavor.
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Bake the casserole: Cover the dish with foil and bake for 30 minutes. After that, carefully remove the foil and continue baking for an additional 15 minutes. You’ll know it’s done when the chicken is cooked through and the top is slightly golden.
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Serve and enjoy: Ladle out generous portions of your bubbling chicken casserole, drizzling extra sauce on top if desired. It’s comforting, filling, and wonderfully satisfying!
Optional: Garnish with fresh herbs for a burst of flavor.
Exact quantities are listed in the recipe card below.
How to Store and Freeze Chicken Casserole
Fridge: Store leftover Chicken Casserole in an airtight container for up to 3 days. Make sure it’s completely cooled before sealing to maintain freshness.
Freezer: For longer storage, freeze portions in airtight containers or freezer bags for up to 3 months. Label with dates, and thaw in the fridge overnight before reheating.
Reheating: To reheat, warm the casserole in the oven at 350°F (175°C) for 20-30 minutes covered with foil until heated through. You can also microwave individual portions for about 2-3 minutes.
Storage Tip: If you plan to freeze it, consider undercooking the chicken slightly during baking to prevent dryness upon reheating.
Make Ahead Options
You can effortlessly make this Low Carb Chicken Casserole ahead of time, saving you precious moments during busy weeknights! To prep in advance, simply assemble the casserole (seasoned chicken, veggies, and creamy sauce) and cover tightly with plastic wrap or foil; it can be stored in the refrigerator for up to 24 hours. This method keeps all the flavors intact, so you’ll experience just as delicious results when you bake it later. When you’re ready to serve, just pop it in the preheated oven and bake; you might need to add a few extra minutes if it's straight from the fridge. This make-ahead option guarantees a comforting, home-cooked meal is always within reach!
Chicken Casserole Variations
Feel free to explore delightful twists to make this dish uniquely yours!
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Dairy-Free: Substitute heavy cream with coconut milk or almond milk for a lighter, dairy-free option that still offers creaminess.
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Spicy Kick: Add 1-2 teaspoons of red pepper flakes or diced jalapeños to the sauce for a fiery flavor boost that ignites your taste buds. This variation is perfect for those who love a little heat!
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Vegetarian: Swap chicken for hearty, diced tofu or chickpeas, and add extra vegetables like spinach or mushrooms to create a fulfilling vegetarian version that’s loaded with flavor.
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Herb-Infused: Enhance the sauce by incorporating fresh herbs like thyme, rosemary, or parsley. The herbal notes will elevate the dish and add a refreshing touch to every bite.
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Sweet Twist: For a surprising flavor contrast, toss in diced sweet potatoes or a handful of raisins. This will add a natural sweetness that pairs beautifully with the savory elements.
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Cheesy Upgrade: Mix in your favorite cheese, like mozzarella or cheddar, before baking to create a bubbly, cheesy layer that adds richness and comfort to this dish.
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Quinoa Boost: Replace some of the chicken with cooked quinoa for added texture and a nutritious grain boost. It’s a fantastic way to make your casserole even more filling!
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Zesty Citrus: Squeeze fresh lemon juice over the assembled casserole before baking to add brightness, making the flavors pop and offering a refreshing finish to each serving.
What to Serve with Low Carb Chicken Casserole?
After enjoying a comforting dish like this, it’s easy to create a delightful meal pairing that will elevate your dining experience.
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Garlic Bread: This crispy, buttery treat makes a perfect vehicle for soaking up that creamy sauce, enhancing every bite of your casserole.
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Steamed Broccoli: Light and vibrant, the fresh crunch of broccoli offers a wonderful contrast to the richness of the casserole, adding nutrition without heaviness.
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Cauliflower Rice: As a low-carb alternative, this fluffy, mild dish absorbs flavors beautifully, making it an ideal companion to the savory chicken casserole.
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Mixed Green Salad: Refreshing greens drizzled with a zesty vinaigrette balance the richness of the casserole, creating a harmonious blend of flavors and textures.
A warm, hearty meal deserves something sweet to finish.
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Berry Parfait: Layers of fresh, juicy berries with a drizzle of creamy Greek yogurt make for a light, indulgent dessert that rounds out your meal perfectly.
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Lemonade Spritzers: This refreshing drink with a hint of fizz complements the hearty flavors of the casserole and cleanses your palate after each bite.
Creating a meal around your Low Carb Chicken Casserole can be an adventure of flavors, helping to satisfy both the heart and the soul.
Chef's Helpful Tips
- When making the Chicken Casserole, be sure to season the chicken thoroughly with salt and pepper to enhance its natural flavor.
- Avoid overcooking the chicken by using a meat thermometer; it should reach an internal temperature of 165°F (74°C) for optimal tenderness.
- For the vegetables, cutting them into uniform sizes ensures even cooking and texture throughout the dish.
- Remember to let the casserole rest for a few minutes after baking; this helps the sauce thicken slightly for a better presentation and taste.
Low Carb Chicken Casserole Recipe FAQs
What kind of chicken is best for this casserole?
Absolutely! I recommend boneless, skinless chicken breasts as they're not only lean but also remain juicy and tender during baking. If you'd like to switch things up, you could also use skinless chicken thighs for a different flavor profile, just keep in mind that they may require slight adjustments in cooking time due to their slightly different fat content.
How should I store leftover Chicken Casserole?
Very! Store leftovers in an airtight container in the fridge for up to 3 days. It's important to let the casserole cool to room temperature first to keep it fresh. When you’re ready to enjoy it again, simply reheat in the oven or microwave.
Can I freeze the Chicken Casserole?
Absolutely! You can freeze portions in airtight containers or freezer bags for up to 3 months. For the best results, I suggest undercooking the chicken slightly when baking, as this helps prevent dryness upon reheating. Just remember to label each container with the date for easy reference.
How do I reheat my Chicken Casserole?
To reheat, you can warm the casserole in the oven at 350°F (175°C) for about 20-30 minutes, covering it with foil to keep it moist. If you're in a pinch, individual portions can also be microwaved for about 2-3 minutes. Just make sure it's steaming hot all the way through!
What if I have dietary restrictions, like gluten allergies?
Certainly! To make this dish gluten-free, simply replace the low-sodium soy sauce with a gluten-free alternative such as tamari or coconut aminos. Always check ingredient labels to ensure they don't contain hidden gluten. This way, everyone can enjoy a delicious Chicken Casserole without worry!
How can I tell if my chicken is cooked properly?
To ensure your chicken is cooked through, a meat thermometer is your best friend! The internal temperature should reach 165°F (74°C). If you don't have a thermometer, you can cut into the chicken; it should be opaque and no longer pink inside. Happy cooking!

Chicken Casserole
Ingredients
Equipment
Method
- Preheat the oven to 400°F (200°C) and spray the baking dish with nonstick cooking spray.
- Generously sprinkle salt and pepper over the chicken breasts.
- Dice the bell peppers and slice the zucchini thinly.
- Whisk together heavy cream, soy sauce, Dijon mustard, minced garlic, and a pinch of salt and pepper in a mixing bowl.
- Place the seasoned chicken in the baking dish, add the chopped vegetables, and pour the sauce over the top.
- Cover with foil and bake for 30 minutes, then remove foil and bake for an additional 15 minutes.
- Serve hot, drizzling extra sauce if desired.




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