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Welcome to your new favorite weeknight savior and meal prep champion: the High Protein Cheesy Chicken and Broccoli Casserole. In today’s fast-paced world, finding meals that are both delicious and align with your healthy eating goals can feel like a challenge. This recipe effortlessly bridges that gap, offering a deeply satisfying, comforting dish that is packed with lean protein and fresh vegetables, without sacrificing flavor or your nutritional targets. It’s the perfect blend of creamy, cheesy goodness and wholesome ingredients, designed to fuel your body and delight your taste buds.

The Quest for Healthy Comfort Food: Our Inspiration
As home cooks who prioritize flavorful, nourishing meals, we understand the constant search for recipes that hit all the right notes. We’re not certified nutritionists, but through years of cooking and experimenting, we’ve developed a knack for creating dishes that are both fulfilling and fit into a healthy lifestyle. This particular casserole is a testament to that philosophy, proving that low-calorie and high-protein can also mean incredibly delicious.
The inspiration for this hearty main dish actually stems from a beloved classic in our kitchen: our traditional broccoli casserole recipe. For years, it’s been a staple side dish, especially during holidays and family gatherings. Its creamy, cheesy base always brought a smile to everyone’s face. However, we often found ourselves wishing that cozy flavor could be transformed into a complete, satisfying meal. That’s when the idea for a protein-packed version was born.
To elevate our side dish into a main course, we focused on boosting its nutritional profile. We incorporated lean chicken breast for a significant protein punch and swapped out heavier creams for low-fat Greek yogurt, adding creamy texture and an extra boost of protein and beneficial probiotics. A careful selection of simple seasonings enhanced the natural flavors without adding unnecessary calories. The result is a creamy, high-protein casserole that truly satisfies. Whether you’re meticulously tracking your macros, preparing meals for the busy week ahead, or simply yearning for a dish that feels like a warm hug but keeps you on track, this simple yet robust casserole is your ideal solution.
Why Choose a High-Protein Meal Like This?
Embracing high-protein meals offers a multitude of benefits for your health and wellness journey. This Cheesy Chicken and Broccoli Casserole is not just tasty; it’s a strategic choice for anyone looking to optimize their diet. Here’s why:
- Increased Satiety: Protein is renowned for its ability to keep you feeling fuller for longer. This means fewer cravings and less temptation to snack on unhealthy options between meals. The substantial protein in this casserole ensures lasting satisfaction.
- Muscle Support and Growth: For those active individuals or anyone focusing on body composition, adequate protein intake is crucial for muscle repair and growth. Lean chicken breast provides essential amino acids vital for maintaining and building muscle mass.
- Metabolism Boost: Your body expends more energy digesting protein compared to fats or carbohydrates, a phenomenon known as the thermic effect of food. Incorporating high-protein meals can slightly boost your metabolism, aiding in calorie expenditure.
- Weight Management: By promoting satiety and supporting a healthy metabolism, high-protein diets are incredibly effective for weight management. This casserole helps you feel satisfied on fewer calories, making it easier to stick to your goals.
- Stable Blood Sugar: Protein helps slow down the absorption of carbohydrates, leading to a more gradual rise in blood sugar levels. This stability prevents energy crashes and keeps you feeling more balanced throughout the day.
In essence, this High Protein Cheesy Chicken and Broccoli Casserole is more than just a delicious dish; it’s a powerful tool in your healthy eating arsenal, designed to support your body and keep you energized.

Essential Ingredients for Your Healthy Casserole
Crafting this simple yet spectacular casserole requires a handful of accessible ingredients. Each component plays a crucial role in delivering that perfect balance of flavor, texture, and nutrition.
- Broccoli Crowns: We recommend using fresh broccoli crowns, chopped into small, uniform florets. This ensures they cook evenly and become tender, not mushy. If fresh is not available, frozen broccoli florets are a fantastic alternative – just be sure to thaw and thoroughly drain them to prevent excess moisture in your casserole. Broccoli adds vital vitamins, minerals, and fiber, making this dish even healthier.
- Chicken Breast: The star of our high-protein show! Lean chicken breast is an excellent source of protein, making this casserole incredibly satisfying. Cut it into 1-inch cubes for optimal cooking and integration into the dish. While chicken thighs can be used for extra flavor, note that they will add a bit more fat content to the recipe.
- Cream of Mushroom Soup: This ingredient provides the foundation for our rich, savory, and undeniably creamy base. It adds a depth of umami flavor that perfectly complements the chicken and broccoli. For dietary preferences or variety, feel free to substitute with cream of chicken soup or even a homemade cream sauce for a fresh twist.
- Low-Fat Greek Yogurt: This is our secret weapon for adding incredible creaminess and a significant protein boost without the extra fat found in traditional cream-based sauces. Greek yogurt also introduces beneficial probiotics. For an even greater protein punch and a slightly more cheesy profile, you can substitute the Greek yogurt with low-fat cottage cheese. The difference in calories is minimal, but the protein boost is notable.
- Garlic Powder: A fundamental pantry spice that infuses the chicken with aromatic, savory flavor without any fuss. It’s a quick way to elevate the taste profile.
- Onion Powder: Complementing the garlic, onion powder deepens the savory notes of the dish, adding a subtle sweetness and enhancing the overall complexity.
- Salt: Essential for seasoning and bringing out the best in all the other ingredients. Adjust to your personal preference.
- Cheddar Cheese: For that irresistible cheesy comfort, we opt for sharp cheddar. Its robust flavor means you can use less cheese to achieve maximum cheesy impact, helping keep the calorie count in check. Don’t hesitate to use a reduced-fat cheddar or your favorite cheese blend if you prefer.
More Healthy & Hearty Meal Ideas
If you love this casserole, you’ll definitely want to explore these other delicious and healthy recipes:
- High Protein Chicken Parmesan Bowl – A lighter, healthier take on a beloved Italian classic.
- Keto Chicken Bacon Ranch Casserole – Indulgent flavors, low in carbs, and incredibly satisfying.
- Buffalo Chicken Casserole – For those who love a bit of spice, perfect for game day or a zesty meal prep option.
- Chicken Cordon Bleu Casserole – A creamy, cheesy, and incredibly popular reader favorite that’s sure to impress.

Effortless Preparation: Step-by-Step Guide
Creating this delicious and healthy casserole is surprisingly simple, making it ideal for even the busiest of days. Follow these easy steps to bring this comforting dish to life in your kitchen.
Step-by-Step Instructions
Step 1 – Preheat Your Oven: Begin by preheating your oven to 400°F (200°C). This ensures your oven is at the optimal temperature for even baking from the moment your casserole goes in.
Step 2 – Prepare the Chicken: Cut your boneless, skinless chicken breasts into uniform 1-inch cubes. This size ensures they cook through evenly and are tender in every bite. In a medium bowl, season the chicken cubes generously with garlic powder, onion powder, and salt. Toss thoroughly to ensure every piece is coated, infusing them with flavor from the start.
Step 3 – Create the Creamy Base: In a separate mixing bowl, combine the can of cream of mushroom soup with the low-fat Greek yogurt. Whisk or stir vigorously until the mixture is completely smooth and well combined. This forms the luscious, protein-rich sauce that will bind your casserole together.
Step 4 – Layer the Casserole: Take an 11×17-inch baking dish and spread the chopped broccoli florets evenly across the bottom. Next, distribute the seasoned chicken cubes over the broccoli layer. Aim for an even spread to ensure all ingredients cook uniformly.
Step 5 – Apply the Creamy Mixture: Carefully spoon the mushroom soup and Greek yogurt mixture over the chicken and broccoli layers. Use a spatula to spread it evenly, ensuring everything is thoroughly coated for maximum creaminess.
Step 6 – Add the Cheese Topping: Generously sprinkle the shredded sharp cheddar cheese over the top of the casserole. This cheese layer will melt into a golden, bubbly crust, adding irresistible flavor and texture.
Step 7 – Initial Bake (Covered): Cover the baking dish tightly with aluminum foil. Place it in your preheated oven and bake for 30 minutes. Covering the casserole helps to steam the broccoli and chicken, ensuring they become tender and juicy.
Step 8 – Final Bake (Uncovered): After 30 minutes, carefully remove the foil. Return the uncovered dish to the oven and bake for an additional 10-15 minutes, or until the cheese on top is beautifully bubbly, melted, and slightly golden brown. The internal temperature of the chicken should reach 165°F (74°C) for food safety.
Step 9 – Serve and Savor: Once baked to perfection, remove the casserole from the oven. Let it cool for a few minutes before serving. This brief resting period allows the flavors to meld and the casserole to set slightly, making it easier to serve. Dig in and enjoy your homemade, healthy comfort food!

Expert Tips for Casserole Perfection
Achieving the perfect High Protein Cheesy Chicken and Broccoli Casserole is simple with a few insider tricks. These tips will help you maximize flavor, efficiency, and safety:
- Maximize Meal Prep: This casserole is a fantastic candidate for meal prepping. Consider doubling the batch. Bake one for immediate enjoyment and freeze the other in an oven-safe container for a convenient meal on a busy day. It reheats beautifully!
- Uniform Broccoli Chunks: To ensure your broccoli cooks through evenly and achieves that desirable tender-crisp texture, make sure to chop the crowns into small, consistent florets. Larger pieces may remain too firm, while tiny ones could become overly soft.
- Food Safety First: Always use a meat thermometer to confirm that your chicken has reached an internal temperature of 165°F (74°C). This guarantees the chicken is fully cooked and safe to eat, preventing any guesswork.
- Customize to Your Liking: Don’t be afraid to make this recipe your own! This casserole is incredibly versatile. Experiment by tossing in extra vegetables such as sliced mushrooms, diced bell peppers, or even a handful of fresh spinach (which will wilt down significantly). You can also add a pinch of red pepper flakes for a subtle kick or a dash of smoked paprika for extra depth.
- Cheese Varieties: While sharp cheddar offers a bold flavor, feel free to explore other cheese options like Monterey Jack, a mild Colby, or a blend of Italian cheeses for a different taste profile.
Frequently Asked Questions About This Casserole
Can I use frozen broccoli?
Absolutely! Frozen broccoli florets are a convenient substitute. Just be sure to thaw them completely before adding to the casserole and pat them very dry with a paper towel. This step is crucial to avoid introducing excess moisture into the dish, which can make it watery.
Is this recipe low carb?
Yes, this casserole is naturally low in carbohydrates. It contains no pasta, rice, or other grain-based fillers, making it an excellent choice for those following low-carb, keto-friendly, or general healthy eating plans. The primary carbs come from the broccoli and a minimal amount from the soup and yogurt.
How do I store leftovers?
Storing leftovers is simple! Allow the casserole to cool completely, then transfer it to airtight containers. It will keep well in the refrigerator for up to 3-4 days. For longer storage, you can freeze individual portions for up to 2 months.
What’s the best way to reheat it?
For individual portions, the microwave works perfectly – heat on high until warmed through. If reheating a larger portion or from frozen, place it in an oven-safe dish and bake at 350°F (175°C) until heated through to the center. Adding a splash of water or broth before reheating can help maintain moisture.
Can I prep this ahead of time?
This recipe is ideal for advance preparation! You can assemble the entire casserole (up to the point of baking) and store it covered in the refrigerator for up to 24 hours. When ready to bake, just add a few extra minutes to the cooking time to account for the chilled temperature. We often like to assemble it in individual oven-safe portions for quick lunches or dinners throughout the week.

Storing and Reheating Your Casserole
One of the best features of this High Protein Cheesy Chicken and Broccoli Casserole is how well it stores and reheats, making it a fantastic option for meal prep or enjoying delicious leftovers.
Fridge Storage: Allow any cooled leftovers to reach room temperature, then transfer them into airtight containers. Properly stored, the casserole will remain fresh and delicious in the refrigerator for 3 to 4 days.
Freezer Storage: For longer storage, this casserole freezes beautifully. Once completely cool, transfer individual servings into freezer-safe meal prep containers or wrap larger portions tightly in plastic wrap and then foil. It can be frozen for up to 2 months. Thaw overnight in the refrigerator before reheating for best results.
Reheating Instructions:
- Microwave: For individual portions, cover loosely and microwave on high in 1-minute intervals, stirring occasionally, until heated through.
- Oven: For larger portions or to retain a crispier topping, reheat in the oven at 350°F (175°C) until thoroughly warmed through (about 20-30 minutes for refrigerated portions, longer for frozen). If the casserole seems a bit dry, add a splash of water or chicken broth before reheating to restore moisture.
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High Protein Cheesy Chicken and Broccoli Casserole Recipe
Servings: 6
Prep Time: 15 mins
Cook Time: 40 mins
Total Time: 55 mins
Created By: Kat Jeter & Melinda Machado
This high protein cheesy chicken and broccoli casserole is low calorie, incredibly easy to prepare, and perfect for healthy lunches or dinners any day of the week.
Print Recipe
Ingredients
- 15 ounces Trimmed Broccoli crowns, cut into small pieces
- 1.5 pounds Chicken breast, cut into 1 inch cubes
- 10.5 ounces Cream of mushroom soup
- 8 ounces Low Fat Greek yogurt
- 1 teaspoon Garlic powder
- 1 teaspoon Onion powder
- ½ teaspoon Salt
- 2 ounces Shredded Cheddar cheese
Instructions
- Preheat oven to 400 degrees F (200°C).
- Cut chicken into 1-inch cubes. Sprinkle with garlic powder, onion powder, and salt, then toss to coat evenly.
- In a mixing bowl, combine the cream of mushroom soup and low-fat Greek yogurt. Stir until smooth and well combined.
- Spread the chopped broccoli evenly in the bottom of an 11×17-inch baking dish. Add the seasoned chicken on top, distributing it evenly.
- Spread the mushroom soup and Greek yogurt mixture evenly over the chicken and broccoli layers.
- Top generously with shredded cheddar cheese.
- Cover the dish with aluminum foil and bake for 30 minutes.
- Remove the foil and continue to bake for an additional 10-15 minutes, or until the cheese is bubbly and lightly golden brown. Ensure chicken reaches an internal temperature of 165°F (74°C).
- Once baked, remove from the oven and let it cool for a few minutes before serving hot. Enjoy!
Nutrition Information (Estimated Per Serving)
Serving: 0.16 dish
Calories: 511 kcal
Carbohydrates: 23.9 g
Protein: 65.1 g
Fat: 16 g
Saturated Fat: 3.1 g
Polyunsaturated Fat: 0.5 g
Monounsaturated Fat: 0.8 g
Cholesterol: 95.9 mg
Sodium: 575 mg
Potassium: 939.6 mg
Fiber: 2.2 g
Sugar: 14 g
Vitamin A: 592 IU
Vitamin C: 65 mg
Calcium: 154 mg
Iron: 1 mg
Nutrition Disclaimer: We are not certified nutritionists. Nutrition facts are an estimate and are provided as a courtesy. They are generated by an online API which recognizes ingredient names and amounts and makes calculations based on the serving size. Results may vary.
Course: Main Dish
Cuisine: American
