High-Protein, Low-Carb Chicken Casserole

Description

High-Protein, Low-Carb Chicken Casserole is a creamy, cheesy, and satisfying meal designed for anyone looking for a nutritious dinner packed with protein and flavor. This comforting casserole combines tender chicken breast, vegetables, creamy ingredients, and melted cheese to create a filling dish without heavy carbohydrates. It is perfect for meal prep, busy weeknight dinners, family meals, or anyone following a high-protein lifestyle. The combination of juicy chicken, rich seasoning, and a golden cheesy topping makes this casserole taste indulgent while keeping the ingredients simple and balanced. Serve it with a fresh salad, roasted vegetables, or steamed greens for a complete low-carb meal that everyone will enjoy.

Ingredients For the Chicken Casserole

2 lbs boneless, skinless chicken breasts, cooked and shredded
2 tablespoons olive oil
1 medium onion, finely chopped
3 garlic cloves, minced
1 cup chopped spinach
1 cup chopped broccoli florets
1/2 cup diced bell peppers
1 teaspoon smoked paprika
1 teaspoon Italian seasoning
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon salt
1/4 teaspoon black pepper

For the Creamy Sauce

8 oz cream cheese, softened
1/2 cup plain Greek yogurt
1/2 cup sour cream
1/2 cup chicken broth
1/2 cup grated Parmesan cheese
1 teaspoon Dijon mustard

For the Topping

1 1/2 cups shredded mozzarella cheese
2 tablespoons chopped fresh parsley
Extra Parmesan cheese, optional

Step-by-Step Instructions

Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with cooking spray or olive oil.
If using raw chicken, cook the chicken breasts by boiling, baking, or grilling until fully cooked. Allow them to cool slightly, then shred into bite-sized pieces.
Heat olive oil in a large skillet over medium heat. Add the chopped onion and cook for 3 to 4 minutes until softened.
Add minced garlic and cook for another 30 seconds until fragrant. Stir in spinach, broccoli, and bell peppers. Cook for 3 to 5 minutes until the vegetables slightly soften.
Add the shredded chicken to the skillet. Season with smoked paprika, Italian seasoning, garlic powder, onion powder, salt, and black pepper. Mix well to distribute the flavors.
In a separate bowl, combine softened cream cheese, Greek yogurt, sour cream, chicken broth, Parmesan cheese, and Dijon mustard. Stir until the sauce becomes smooth and creamy.
Pour the creamy sauce over the chicken and vegetable mixture. Stir gently until everything is evenly coated.
Transfer the mixture into the prepared baking dish and spread it into an even layer.
Sprinkle shredded mozzarella cheese over the top and add extra Parmesan if desired.
Bake uncovered for 20 to 25 minutes, or until the cheese is melted, bubbly, and lightly golden.
Remove from the oven and let the casserole rest for 5 minutes before serving. Garnish with fresh parsley and enjoy warm.

Tips and Notes

For the best texture, use freshly cooked shredded chicken because it absorbs the creamy sauce better. Rotisserie chicken can also be used for a quicker option. Make sure cream cheese is softened before mixing to create a smooth sauce without lumps. You can customize the vegetables depending on your preference by adding mushrooms, zucchini, cauliflower, or kale while keeping the recipe low-carb. Avoid adding vegetables with high water content without cooking them first, as they may make the casserole watery. This casserole is excellent for meal prep because it reheats well and the flavors become even better the next day. For extra protein, increase the chicken amount or add more Greek yogurt.

Q&A

Can I make this casserole ahead of time? Yes. Assemble the casserole, cover it, and refrigerate for up to 24 hours before baking. Add a few extra minutes to the cooking time if baking straight from the refrigerator.
Can I freeze High-Protein, Low-Carb Chicken Casserole? Yes. Allow it to cool completely, then store in an airtight freezer-safe container for up to 3 months.
Can I use leftover chicken? Yes. Cooked chicken, grilled chicken, or rotisserie chicken all work well.
How can I make it even higher in protein? Add extra chicken breast, increase Greek yogurt, or mix in cottage cheese for additional protein.
Can I make this dairy-free? Yes. Use dairy-free cream cheese, dairy-free cheese alternatives, and coconut-based yogurt if needed.

Servings & Nutrition