Low Carb Chicken Casserole is a hearty dish that brings together tender chicken, creamy cheese, and fresh veggies in a warm and comforting bake. It’s perfect for anyone looking to enjoy a filling meal without loads of carbs. The mix of flavors and textures—juicy chicken and a rich, cheesy sauce—makes it a satisfying dish any day of the week.
I love making this casserole because it’s so simple to throw together, and it feels like a special meal without a lot of fuss. One of my favorite things is how easy it is to customize with whatever low-carb veggies you have on hand, like broccoli or cauliflower. It’s like a little cozy hug in a dish, especially on busy nights when I want something tasty but without long prep time.
When I serve this casserole, I like to pair it with a fresh side salad for a little crunch and extra color on the plate. It’s great for family dinners or even meal prepping for the week ahead because it keeps well and reheats beautifully. Plus, everyone I’ve shared it with always asks for the recipe—it’s one of those comfort foods that just works again and again.
Key Ingredients & Substitutions
Chicken: I prefer using boneless skinless chicken breasts for lean protein, but thighs add more moisture if you want a juicier casserole. Both work well depending on your taste.
Broccoli: This low-carb veggie adds crunch and nutrition. You can swap it for cauliflower or green beans if you like a different texture.
Cheese: Sharp cheddar and mozzarella create a creamy, melty topping. If you’re avoiding dairy, try dairy-free cheese alternatives, but expect less melt.
Cream & Cream Cheese: These make the sauce rich and smooth. You can use half-and-half or full-fat coconut milk for a lighter or dairy-free option.
How Do You Make the Sauce Rich and Smooth Without Clumps?
The creamy cheese sauce is key here. To get it just right:
- Warm the heavy cream and softened cream cheese gently in a pan over low heat.
- Stir often to help the cream cheese melt fully and blend smoothly with the cream.
- Add shredded cheese gradually, stirring until melted before adding more.
- Keep the heat low to prevent the sauce from separating or forming lumps.
- If the sauce feels too thick, add a splash of cream or broth to loosen it up.
Taking your time with this step ensures the sauce coats the chicken and veggies perfectly, making your casserole creamy and delicious.
Equipment You’ll Need
- Large skillet – I use this to cook the chicken and garlic, and it helps save on dishes.
- Mixing bowl – perfect for combining the chicken, veggies, and cheese sauce evenly.
- Casserole dish – choose a 9×13-inch dish for enough room and even baking.
- Measuring cups and spoons – to keep everything accurate and easy to follow.
- Oven mitts – essential for safe handling when removing the hot casserole from the oven.
Flavor Variations & Add-Ins
- Swap chicken for cooked turkey or ham slices for a different meat option.
- Add chopped spinach or kale for extra greens and nutrients.
- Use Monterey Jack or pepper Jack cheese for a different flavor and some spicy kick.
- Spice it up with a pinch of red pepper flakes or smoked paprika for extra flavor.
Low Carb Chicken Casserole
Ingredients You’ll Need:
For The Casserole:
- 2 lbs boneless, skinless chicken breasts or thighs, cut into bite-sized pieces
- 2 cups broccoli florets
- 1 red bell pepper, diced
For The Cheese Sauce and Topping:
- 1 cup shredded sharp cheddar cheese
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- 1 cup heavy cream
- 4 oz cream cheese, softened
- 2 cloves garlic, minced
- 1 tsp dried Italian seasoning or mixed herbs
- ½ tsp paprika
- Salt and black pepper, to taste
- 2 tbsp olive oil or butter
- Fresh parsley, chopped (for garnish)
How Much Time Will You Need?
This recipe should take about 10 minutes to prepare and 20-25 minutes to bake, so expect around 35 minutes total from start to serving. It’s a great weeknight meal that’s quick and satisfying!
Step-by-Step Instructions:
1. Cook the Chicken and Garlic:
Preheat your oven to 375°F (190°C). In a large skillet over medium heat, warm the olive oil or butter. Add the minced garlic and sauté for about a minute until fragrant. Then, add the chicken pieces, seasoning with salt, pepper, paprika, and Italian seasoning. Cook for 7-10 minutes until the chicken is browned and fully cooked. Remove from heat.
2. Make the Creamy Cheese Sauce:
In the same skillet or in a separate pan, combine the heavy cream and softened cream cheese. Stir gently over low heat until smooth and well blended. Next, add half of the shredded cheddar and mozzarella cheeses into the cream mixture, stirring constantly until melted and creamy.
3. Combine and Bake:
In a mixing bowl, combine the cooked chicken, broccoli florets, diced red bell pepper, and the creamy cheese sauce. Stir everything together evenly. Transfer the mixture to a greased casserole dish. Sprinkle the remaining cheddar, mozzarella, and Parmesan cheeses evenly on top.
4. Bake and Serve:
Bake the casserole in the preheated oven, uncovered, for 20-25 minutes until the cheese on top is bubbly and golden brown. Let the casserole rest for about 5 minutes before serving. Garnish with freshly chopped parsley for a pop of color and freshness. Enjoy your warm, cheesy, low carb chicken casserole!
Can I Use Frozen Chicken for This Casserole?
Yes, you can! Just be sure to fully thaw the chicken before cooking. Thaw it safely overnight in the fridge or use the cold water method for quicker thawing. Pat the chicken dry before seasoning to avoid excess moisture.
Can I Substitute the Vegetables?
Absolutely! Broccoli and red bell peppers are great low-carb options, but feel free to swap in cauliflower, zucchini, spinach, or green beans depending on what you have on hand.
How Should I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the microwave or oven to keep the casserole creamy and delicious.
Is This Recipe Suitable for Meal Prep?
Yes, it works perfectly for meal prep! Assemble the casserole ahead of time and refrigerate before baking, or cook fully and portion out for easy reheating throughout the week.