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If you’re craving a delicious dish that’s both satisfying and simple to prepare, this Easy Low Carb Chicken Casserole Recipe will quickly become one of your go-to favorites. It’s packed with tender chicken, rich and tangy creamy sauce, and topped with cheesy, smoky goodness that makes each bite a comforting delight. Whether you’re watching your carb intake or just love classic, hearty casseroles, this recipe is a perfect balance of flavor and healthfulness, crafted to make your dinner effortless and memorable.
Ingredients You’ll Need
Gathering the right ingredients is the first step to creating this savory chicken casserole that’s full of flavor and texture. Each item brings its own special touch—from the creamy mayonnaise and sour cream that add lusciousness, to the sharp cheddar cheese and smoky bacon bits that create that irresistible finish.
- 4 boneless, skinless chicken breasts (8 oz each, 32 oz total): The hearty and lean protein base of this casserole, ensuring every bite is juicy and satisfying.
- Avocado oil spray: A healthy, neutral oil for greasing the dish, preventing sticking without overpowering flavors.
- ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt): Essential for seasoning the chicken perfectly.
- ¼ teaspoon black pepper: Adds a mild, warming spice that enhances the overall flavor.
- ¼ cup mayonnaise (or up to ⅓ cup for a creamier casserole): Creates a rich, silky sauce that keeps the chicken moist and tender.
- ¼ cup sour cream (or up to ⅓ cup for a creamier casserole): Adds tangy brightness and creamy texture to the sauce.
- 1 tablespoon Dijon mustard: Brings a subtle zing that perfectly balances the richness.
- 1 tablespoon fresh garlic, minced: Fresh garlic infuses the casserole with robust, savory depth.
- ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt): Additional seasoning for the sauce to enhance all flavors.
- ¼ teaspoon black pepper: Provides a gentle kick to the creamy mixture.
- ½ teaspoon dried thyme: Adds a fragrant, herbaceous note that complements the chicken beautifully.
- ½ teaspoon paprika: Gives a subtle smokiness and vibrant color to the dish.
- ¼ teaspoon cayenne pepper: A touch of heat to elevate the flavor profile without overwhelming.
- 1 cup sharp cheddar cheese, shredded (divided): Cheese is the crowning glory, creating that golden, melty topping everyone loves.
- ¼ cup scallions (green parts only), sliced: Adds fresh, mild onion flavor and a burst of color.
- ¼ cup bacon bits (room temperature): Smoky and crunchy, these provide the perfect finishing touch.
How to Make Easy Low Carb Chicken Casserole Recipe
Step 1: Prepare and Sear the Chicken
Start by preheating your oven to 375°F (190°C) and lightly spraying your casserole dish with avocado oil to prevent sticking. Season your chicken breasts with salt and pepper, then quickly sear them in a skillet over medium heat for 2 to 3 minutes on each side. This step is optional but highly recommended to lock in flavor and give the chicken a beautiful golden crust.
Step 2: Create the Creamy Sauce
In a mixing bowl, combine mayonnaise, sour cream, Dijon mustard, minced garlic, salt, pepper, dried thyme, paprika, and cayenne pepper. Stir in half of the shredded sharp cheddar cheese — this mixture will become the luscious sauce that coats each tender chicken breast in the casserole.
Step 3: Assemble the Casserole
Place your seared chicken breasts evenly in the greased casserole dish. Spread the creamy sauce mixture generously over the chicken, ensuring every piece is well covered. Then sprinkle the remaining half of the cheddar cheese evenly on top. This layering ensures a melty cheese crust that will bake to perfection.
Step 4: Bake to Perfection
Bake uncovered in your preheated oven for 25 to 30 minutes, or until the chicken reaches an internal temperature of 165°F (74°C). During this time, the sauce will thicken and the cheese will bubble beautifully, melding all the flavors together for that ultimate comfort food experience.
Step 5: Add Final Touches and Rest
Once baked, remove the casserole from the oven and immediately sprinkle the sliced scallions and bacon bits over the top. Let the casserole rest for about 5 minutes to allow flavors to settle and juices to redistribute before serving. This makes every bite absolutely divine.
How to Serve Easy Low Carb Chicken Casserole Recipe
Garnishes
Fresh, bright garnishes elevate this casserole to an impressive dish. The scallions add a crisp, slightly peppery note, while the bacon bits bring crunch and smoky richness. You can also add a sprinkle of fresh parsley or chives for a burst of green and added freshness if you like.
Side Dishes
This casserole pairs wonderfully with simple low-carb sides like steamed asparagus, roasted Brussels sprouts, or a crisp mixed green salad. If you want to keep the meal light and nutritious, these vegetable sides complement the creamy chicken casserole perfectly without overpowering it.
Creative Ways to Present
For a crowd-pleasing feast, serve individual portions in mini ramekins or small casseroles topped with extra cheese and bacon bits for an added wow factor. You can also serve it alongside cauliflower rice to soak up the creamy sauce, turning it into a complete low-carb comfort meal. Presentation with colorful garnishes like pomegranate seeds or fresh herbs adds a sophisticated touch.
Make Ahead and Storage
Storing Leftovers
Once cooled, store any leftover Easy Low Carb Chicken Casserole Recipe in an airtight container in the refrigerator. It will keep well for up to 3 days, maintaining that creamy texture and delightful flavor. Just be sure to cover it tightly to prevent drying out.
Freezing
If you want to enjoy this casserole later, it freezes beautifully. Place the fully cooled casserole in a freezer-safe container or wrap tightly in aluminum foil and plastic wrap. It’s best enjoyed within 2 months. Thaw in the refrigerator overnight before reheating to preserve the creamy texture.
Reheating
For reheating, warm the casserole in the oven at 350°F (175°C) until heated through, about 15 to 20 minutes. You can also use a microwave for convenience, but the oven method helps maintain the dish’s texture and melty cheese topping best. Add a few extra minutes if reheating from frozen once thawed.
FAQs
Can I use chicken thighs instead of chicken breasts?
Absolutely! Chicken thighs will add extra juiciness and flavor to the casserole, though the cooking time may vary slightly. Make sure to check for doneness by ensuring the internal temperature reaches 165°F (74°C).
Is it possible to make this recipe dairy-free?
Yes, you can substitute the cheddar cheese with a dairy-free cheese alternative, and swap the sour cream and mayonnaise for their dairy-free versions. The texture might be slightly different, but the flavors will remain delicious.
Can I add vegetables to this casserole?
Feel free to toss in some low-carb veggies like chopped spinach, mushrooms, or zucchini to give the casserole extra nutrition and volume. Just be mindful of adding moisture, so adjust the sauce consistency if needed.
What is the best way to tell when the casserole is done?
The most reliable method is using a meat thermometer. The chicken should reach an internal temperature of 165°F (74°C). The cheese on top should be melted and slightly golden for that perfect finish.
Can I prepare this casserole ahead of time and bake it later?
Definitely! You can assemble the casserole, cover it tightly, and keep it in the fridge for up to 24 hours before baking. This makes it perfect for busy weeknights or entertaining guests with minimal prep on the day of serving.
Final Thoughts
This Easy Low Carb Chicken Casserole Recipe is such a joy to make and even more delightful to eat. It manages to be comforting and crave-worthy while staying friendly to your low-carb goals. I truly hope it finds a special place on your dinner table and brings warmth to your meals just like it does for me. Give it a try—you might just find a new favorite!
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Easy Low Carb Chicken Casserole Recipe
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Total Time: 40 minutes
- Yield: 4 servings
- Category: Main Course
- Method: Baking
- Cuisine: American
- Diet: Low Carb
Description
A flavorful and easy low carb chicken casserole featuring seared chicken breasts baked in a creamy, tangy sauce with sharp cheddar cheese, fresh garlic, and smoky bacon bits, perfect for a comforting and healthy weeknight meal.
Ingredients
Chicken and Seasoning
- 4 boneless, skinless chicken breasts (8 oz each, 32 oz total)
- Avocado oil spray
- ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt), divided
- ¼ teaspoon black pepper, divided
Sauce
- ¼ cup mayonnaise (or up to ⅓ cup for a creamier casserole)
- ¼ cup sour cream (or up to ⅓ cup for a creamier casserole)
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh garlic, minced
- ½ teaspoon dried thyme
- ½ teaspoon paprika
- ¼ teaspoon cayenne pepper
- ½ teaspoon Diamond Crystal kosher salt (or ¼ teaspoon regular salt)
- ¼ teaspoon black pepper
Topping
- 1 cup sharp cheddar cheese, shredded (divided)
- ¼ cup scallions (green parts only), sliced
- ¼ cup bacon bits (room temperature)
Instructions
- Preheat Oven and Prepare Dish: Preheat the oven to 375°F (190°C). Lightly spray a casserole dish with avocado oil to prevent sticking and ensure even cooking.
- Season and Sear Chicken: Season the chicken breasts lightly with salt and pepper. Heat a skillet over medium heat and sear the chicken breasts for 2 to 3 minutes per side until they are lightly browned. This step is optional but adds extra flavor and texture to the dish.
- Make the Sauce: In a mixing bowl, combine mayonnaise, sour cream, Dijon mustard, minced garlic, salt, pepper, dried thyme, paprika, and cayenne pepper. Stir the mixture until smooth, then fold in half of the shredded sharp cheddar cheese (½ cup) to integrate the flavors.
- Assemble the Casserole: Place the seared chicken breasts in the prepared casserole dish. Spread the prepared sauce evenly over the chicken, covering each breast thoroughly to ensure the flavors penetrate during baking.
- Add Cheese Topping: Sprinkle the remaining shredded sharp cheddar cheese (½ cup) evenly over the top of the sauced chicken to create a melty, golden crust while baking.
- Bake: Place the casserole dish uncovered in the preheated oven. Bake for 25 to 30 minutes, or until the chicken reaches an internal temperature of 165°F (74°C), ensuring it is fully cooked and juicy.
- Garnish: Remove the casserole from the oven and sprinkle evenly with fresh scallions and bacon bits for a pop of color, texture, and smoky flavor.
- Rest and Serve: Let the casserole rest for 5 minutes before serving. This allows the juices to redistribute and makes the dish easier to serve.
Notes
- Searing the chicken before baking is optional but recommended to add extra flavor.
- You can adjust the amount of mayonnaise and sour cream up to ⅓ cup for a creamier texture.
- Use Diamond Crystal kosher salt for more accurate seasoning measurements; regular salt can be substituted at half the amount.
- For a spicier casserole, increase the cayenne pepper slightly or add sliced jalapeños.
- Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.
- This recipe pairs well with a fresh green salad or steamed low-carb vegetables.
