This Low Carb Chicken Casserole is a delicious, hearty dish that’s packed with tender chicken, creamy cheese, and fresh veggies. It’s perfect for anyone looking to enjoy a comforting meal without all the extra carbs. The casserole has a great blend of flavors and textures that make it a satisfying dinner option any night of the week.
I love making this casserole when I want something easy to prepare but still feel like a home-cooked meal. One of my favorite parts is how versatile it is — you can add your favorite low-carb vegetables or spices to make it just right for your taste. Plus, it reheats well, so it’s perfect for leftovers or meal prep during busy weeks.
Serving this alongside a simple green salad or some steamed broccoli makes the meal feel complete without adding any unnecessary carbs. It’s a cozy dish that feels like a warm hug on a plate, and I always feel good knowing I’m eating something nutritious and satisfying. Everyone I’ve shared it with keeps asking for the recipe!
Key Ingredients & Substitutions
Chicken breast: Using cooked chicken breast keeps this dish lean. Rotisserie chicken works great for saving time, or leftover chicken is a perfect fit.
Broccoli: Fresh broccoli adds crunch and color. Frozen broccoli works too—just thaw and drain any liquid before mixing.
Cheeses: Cheddar and mozzarella give creaminess and a nice melt. Cream cheese adds richness and makes the sauce smooth. If you want, try Monterey Jack or Colby instead of cheddar.
Sour cream and mayonnaise: These bring moisture and tang. Greek yogurt can substitute for sour cream to lighten it up, but keep mayo for that richness.
Seasonings: Garlic powder, onion powder, and paprika give flavor without carbs. Feel free to add a pinch of cayenne for a spicy kick or dried herbs like thyme for more aroma.
How Do You Get the Cheese Crispy and Golden on Top?
To get that beautiful golden cheese topping, spread the cheese evenly over the casserole before baking. Make sure to bake it uncovered so moisture can escape, allowing the cheese to crisp up.
- Preheat oven fully to 350°F (175°C) for even cooking.
- Bake uncovered—covering traps steam and makes cheese soggy.
- Keep an eye on the last 5 minutes to avoid burning.
- For extra crunch, broil 1-2 minutes at the end but watch closely.
This step gives a lovely texture contrast between creamy inside and crispy top, making the casserole extra tasty!
Equipment You’ll Need
- 9×13-inch baking dish – It’s the perfect size for even baking and easy serving.
- Large mixing bowl – Useful for combining the sauce ingredients smoothly.
- Measuring cups and spoons – To ensure accurate portioning of your ingredients.
- Spatula or spoon – For mixing everything together and spreading in the dish.
- Oven – Necessary for baking the casserole until bubbly and golden on top.
Flavor Variations & Add-Ins
- Swap chicken for cooked turkey or ham for a different protein option.
- Add cooked bacon bits or sliced mushrooms to boost savory flavor.
- Try using pepper jack or Swiss cheese instead of cheddar for a new taste.
- Mix in cooked cauliflower rice or chopped spinach for extra veggies and texture.
Low Carb Chicken Casserole
Ingredients You’ll Need:
Main Ingredients:
- 3 cups cooked chicken breast, cut into chunks
- 3 cups fresh broccoli florets
Cheese and Dairy:
- 1 cup shredded cheddar cheese (divided)
- 1/2 cup shredded mozzarella cheese
- 1/2 cup cream cheese, softened
- 1 cup sour cream
- 1/2 cup mayonnaise
Seasonings and Garnish:
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1/2 teaspoon paprika
- Salt and pepper to taste
- 1/4 cup chopped green onions or chives (for garnish)
- Optional: Crispy cooked bacon bits or fried onions for extra crunch (low-carb versions)
Time Needed:
Your prep and mixing will take about 10-15 minutes, and the casserole needs 25-30 minutes baking time. So in total, you should budget around 40-45 minutes from start to finish, making it great for a quick and satisfying dinner.
Step-by-Step Instructions:
1. Preheat the Oven:
Set your oven to 350°F (175°C) so it’s ready when your casserole is prepared.
2. Mix the Creamy Sauce:
In a large bowl, combine the softened cream cheese, sour cream, mayonnaise, garlic powder, onion powder, paprika, salt, and pepper. Stir or beat until the mixture is smooth and creamy.
3. Add Chicken and Broccoli:
Fold in the cooked chicken chunks and fresh broccoli florets, mixing well to coat everything evenly with the sauce.
4. Assemble in Baking Dish:
Grease a 9×13-inch baking dish and spread the mixture evenly inside. Sprinkle the shredded cheddar and mozzarella cheese across the top.
5. Bake:
Place the dish in the preheated oven and bake uncovered for 25-30 minutes, or until the casserole is hot and bubbly and the cheese on top has melted and turned golden brown.
6. Final Touches:
Remove the casserole from the oven and allow it to cool for a few minutes. Garnish with chopped green onions or chives before serving.
7. Serve:
Enjoy your warm, creamy, cheesy, and low-carb chicken casserole. It pairs nicely with a crisp green salad or steamed low-carb vegetables to complete your meal.
Can I Use Frozen Broccoli for This Casserole?
Yes, frozen broccoli works fine! Just make sure to thaw it completely and drain any excess water before adding to avoid a soggy casserole.
How Long Can I Store Leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or microwave until warmed through.
Can I Make This Casserole Ahead of Time?
Absolutely! Prepare the casserole and cover it tightly with foil. Refrigerate for up to 24 hours before baking as directed.
What Can I Use Instead of Mayonnaise?
If you prefer, substitute mayonnaise with Greek yogurt for a lighter option — it will still keep the casserole creamy and delicious.