Low Carb Chicken Casserole is a comforting, hearty dish that combines tender chicken pieces with creamy cheese and fresh vegetables, all baked together into a warm, satisfying meal. It’s perfect for anyone looking to enjoy a filling dinner without too many carbs.
I love making this casserole because it’s easy to prepare, and you can toss in whatever low-carb veggies you have on hand. The cheesy sauce is rich and flavorful, making every bite cozy and delicious. It’s the kind of dish that feels like a warm hug after a long day.
My favorite way to serve this casserole is straight out of the oven with a crisp green salad on the side. It’s a crowd-pleaser that works great for weeknight dinners or even meal prep for the week. Plus, it warms up really well, so leftovers are just as good the next day!
Key Ingredients & Substitutions
Chicken Breast: Using cooked chicken makes this casserole quick to assemble. Rotisserie chicken works great if you’re short on time. You can also use leftover cooked chicken.
Broccoli: Fresh broccoli adds crunch and nutrients. If you prefer, swap it with cauliflower or green beans for a different taste but still low in carbs.
Cheese: Cheddar and Parmesan give the casserole a rich flavor. Feel free to use mozzarella or gouda if you want a milder or creamier texture.
Sour Cream & Mayonnaise: These create the creamy sauce. Greek yogurt can replace sour cream for a tangier, healthier option, and avocado mayo works too.
Bacon: Optional but adds a smoky crunch. For a vegetarian version, skip the bacon or add sautéed mushrooms for extra umami.
How Do You Get the Perfect Creamy and Golden Topping?
To achieve a creamy base with a golden cheese topping, follow these simple tips:
- Mix all ingredients thoroughly so the cheese and sauce coat the chicken and veggies evenly.
- Spread the mixture flat in the dish to promote even cooking.
- Sprinkle the last bit of cheddar cheese on top, so it melts and browns nicely.
- Bake uncovered to let moisture escape, helping the cheese crisp up.
- Let the casserole rest after baking; it thickens the sauce for easier serving.
These steps will give you a creamy interior with a lovely golden crust that’s both tasty and visually appealing.
Equipment You’ll Need
- 9×13 inch casserole dish – Perfect for holding all the ingredients and baking evenly.
- Steamer or pot with a steaming basket – To blanch broccoli quickly and retain its bright color.
- Mixing bowls – For combining the ingredients smoothly and avoiding messes.
- Large spoon or spatula – To gently mix the ingredients without breaking them apart.
- Measuring cups and spoons – For accurate portions of cheese, sour cream, and seasonings.
- Baking sheet or foil – To catch drips if you prefer easier cleanup.
Flavor Variations & Add-Ins
- Use cooked turkey or ham instead of chicken for different flavors or leftover meats.
- Mix in sliced mushrooms, chopped spinach, or bell peppers for extra veggies and flavor.
- Swap cheddar for pepper jack or mozzarella to change the cheesy taste.
- Add a dash of hot sauce or paprika to spice things up or for a smoky flavor.
How to Make Low Carb Chicken Casserole
Ingredients You’ll Need:
For the Casserole:
- 3 cups cooked chicken breast, shredded or cubed
- 3 cups fresh broccoli florets
- 1 cup shredded cheddar cheese (divided)
- ½ cup grated Parmesan cheese
- 1 cup sour cream
- 1 cup mayonnaise
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- ½ teaspoon dried thyme or Italian seasoning
- Salt and pepper, to taste
- 4 slices cooked bacon, crumbled (optional)
- ¼ cup chopped fresh parsley (optional, for garnish)
How Much Time Will You Need?
This casserole takes about 10 minutes to prepare and around 25-30 minutes to bake. Plus, let it rest for 5 minutes before serving. So, plan for roughly 40-45 minutes from start to finish.
Step-by-Step Instructions:
1. Prepare Your Oven and Broccoli:
Preheat the oven to 350°F (175°C). Lightly grease a 9×13 inch casserole dish so your casserole won’t stick. Steam or blanch the broccoli florets for 3-4 minutes until they’re tender but still bright green, then drain well.
2. Mix the Casserole Ingredients:
In a large bowl, combine the cooked chicken, steamed broccoli, ¾ cup shredded cheddar cheese, Parmesan cheese, sour cream, mayonnaise, garlic powder, onion powder, thyme or Italian seasoning, salt, and pepper. Stir everything well so all the flavors blend.
3. Assemble the Casserole:
Spread the mixture evenly into your prepared casserole dish. Then sprinkle the remaining ¼ cup cheddar cheese over the top. If you’re using bacon, sprinkle the crumbled bacon on top as well.
4. Bake and Serve:
Bake uncovered for 25-30 minutes, until bubbly and the cheese on top is melted and golden brown. Let the casserole rest for about 5 minutes to set before serving. Sprinkle some fresh parsley on top if you like for a fresh pop of color and flavor.
Enjoy your warm, cheesy, and healthy Low Carb Chicken Casserole—it’s a simple way to enjoy a comforting meal packed with protein and veggies!
Can I Use Frozen Broccoli Instead of Fresh?
Yes, you can! Just thaw and drain the frozen broccoli well before mixing it into the casserole to avoid excess moisture that could make the dish watery.
Can I Make This Casserole Ahead of Time?
Absolutely! Prepare the casserole up to step 4, cover it tightly, and refrigerate for up to 24 hours. Add the cheese topping and bake when you’re ready to serve.
How Should I Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven or microwave until warmed through.
What Can I Substitute for Mayonnaise?
You can substitute mayonnaise with Greek yogurt or sour cream for a lighter option. Both work well to keep the casserole creamy and flavorful.