Description

This Broccoli and Chicken in a Creamy Sauce Casserole combines juicy, golden-browned chicken with tender broccoli and a rich, velvety garlic-herb cream sauce. Every bite is creamy, savory, and comforting, while the browned chicken adds a delicious roasted flavor that keeps the casserole from tasting flat.

With plenty of lean chicken, broccoli, Greek yogurt, and cheese, this recipe is naturally high in protein and relatively low in carbohydrates. It is a satisfying low-carb dinner that delivers classic comfort-food flavor without needing pasta, rice, or potatoes.

Short 3-Line Description

Tender golden chicken and broccoli are baked in a rich, creamy garlic-herb sauce.
Greek yogurt and cheese add extra protein and an irresistibly creamy texture.
A comforting high-protein, low-carb casserole that’s perfect for busy weeknights.

Can This Broccoli and Chicken Casserole Support Weight Loss Goals?

This casserole can fit into a balanced weight-management eating pattern because it combines lean protein and vegetables in a filling main dish. Chicken breast provides substantial protein, while broccoli adds fiber and volume without contributing many carbohydrates. Using Greek yogurt in the sauce also increases protein while helping create a creamy texture. Portion size and your overall daily food intake still matter, so this recipe should be viewed as one component of a balanced eating pattern rather than a weight-loss food by itself.

Does This Recipe Fit a High-Protein Lifestyle?

Yes, this casserole is particularly suitable for a high-protein, low-carb lifestyle, providing approximately 43g of protein per serving. Chicken breast supplies most of the protein, while Greek yogurt, Parmesan, and mozzarella contribute additional protein and creaminess. With broccoli replacing pasta or rice, the casserole stays relatively low in carbohydrates at approximately 8g net carbs per serving. It is an especially convenient option for anyone looking for a protein-rich dinner that still feels indulgent.

Why This Recipe is Special

💪 High-Protein: Chicken, Greek yogurt, Parmesan, and mozzarella create a protein-rich combination.
🥦 Low-Carb: Broccoli replaces traditional pasta, rice, or potatoes.
🥛 Ultra-Creamy: Greek yogurt and cream create a luxurious sauce without requiring a heavy flour-based roux.
🔥 Golden & Flavorful: Seared chicken develops caramelized edges before being combined with the creamy sauce.
🍽️ Meal-Prep Friendly: The casserole portions easily and reheats well for lunches and dinners.

My Personal Experience

The browned chicken makes the casserole much more flavorful.
Searing the chicken before baking creates golden edges and deeper savory flavor.
I wouldn’t skip this step because it makes a noticeable difference.
The broccoli adds the perfect contrast.
Tender broccoli provides freshness and texture against the rich cream sauce.
It also keeps the casserole from feeling excessively heavy.
The sauce is creamy without needing pasta.
Greek yogurt, cream, Parmesan, and mozzarella create a thick, savory coating.
Every piece of chicken and broccoli gets covered in the sauce.
It works exceptionally well for meal prep.
The individual portions remain flavorful after refrigeration and reheating.
It is an easy way to have a high-protein lunch ready for several days.
The garlic and herbs keep the richness balanced.
Garlic, Italian seasoning, and parsley add freshness to the creamy sauce.
A squeeze of lemon at the end can make the entire casserole taste brighter.

Perfect For

This casserole is ideal for weeknight dinners, family meals, meal prep, low-carb meal plans, keto-style dinners, high-protein diets, Sunday meal preparation, and cozy comfort-food nights.

It can be served on its own because the chicken and broccoli make it a complete main dish. For a larger meal, pair it with a simple green salad, roasted asparagus, cauliflower rice, or sautéed zucchini.

Why You’ll Love This Recipe

Packed with protein
A generous amount of chicken makes each serving satisfying and protein-rich.
Creamy without pasta
The rich sauce coats the chicken and broccoli beautifully without needing noodles.
Easy one-dish finish
Once the chicken and sauce are prepared, everything comes together in one baking dish.
Great for low-carb eating
Broccoli replaces traditional starchy casserole ingredients while maintaining plenty of texture.
Family-friendly flavor
Creamy garlic, Parmesan, mozzarella, and tender chicken create a familiar flavor combination that’s easy to enjoy.
Excellent leftovers
The casserole stores well and can be portioned into individual meal-prep containers.

Common Mistakes to Avoid

Overcooking the chicken before baking
Sear the chicken only until golden on the outside; fully cooking it in the skillet can make it dry after the second cooking stage.
Adding cold Greek yogurt directly to very hot sauce
Let the sauce cool slightly before adding the yogurt to reduce the chance of curdling.
Overcooking the broccoli
Blanch it only until bright green and slightly tender so it retains some texture during baking.
Using too much cheese
Excess cheese can make the casserole greasy and overpower the creamy sauce; measure it carefully for the best balance.

Required Equipment

Large oven-safe skillet — allows the chicken and sauce to come together with minimal cleanup.
9 × 13-inch baking dish — provides enough surface area for even baking and browning.
Large skillet — creates a flavorful golden crust on the chicken.
Whisk — keeps the creamy sauce smooth and lump-free.
Instant-read thermometer — helps prevent overcooking while ensuring the chicken reaches a safe temperature.
Sharp chef’s knife — makes cutting chicken and broccoli quick and even.

Storage Instructions

Refrigerator

Allow the casserole to cool before transferring it to airtight glass or BPA-free meal-prep containers.

Refrigerate for 3–4 days. Keep portions covered to prevent the creamy sauce from absorbing refrigerator odors.

Freezer

For longer storage, divide the completely cooled casserole into individual freezer-safe containers.

Freeze for up to 2 months for the best texture. Thaw overnight in the refrigerator before reheating.

Reheating

Reheat individual portions covered in the microwave at medium power, stirring or rotating halfway through.

For oven reheating, cover the casserole with foil and warm at 325°F (165°C) until hot throughout.

Avoid very high heat because it can cause the creamy sauce to separate.

Recipe Details

Preparation Time: 20 minutes
Cooking Time: 30 minutes
Total Time: 50 minutes
Servings: 6
Best Season: All-season
Total Calories: Approximately 420 calories per serving

Nutrition information is an approximate estimate and will vary depending on the chicken, dairy products, cheese, and exact brands used.

📝 Ingredients

Chicken & Broccoli

2 pounds (907g) boneless, skinless chicken breasts, cut into bite-size pieces
5 cups broccoli florets, fresh or frozen
1 tablespoon olive oil
1 teaspoon garlic powder
1 teaspoon Italian seasoning
½ teaspoon smoked paprika
½ teaspoon salt
½ teaspoon black pepper

Creamy Sauce

1 cup plain nonfat Greek yogurt
½ cup heavy cream
½ cup low-sodium chicken broth
¾ cup shredded mozzarella cheese
½ cup finely grated Parmesan cheese
3 cloves garlic, minced
1 tablespoon cornstarch
1 tablespoon chopped fresh parsley
½ teaspoon Italian seasoning
¼ teaspoon black pepper
¼ teaspoon salt, or to taste

Optional Garnish

1 tablespoon chopped fresh parsley
1 tablespoon grated Parmesan
Lemon wedges, for serving

Ingredient Notes: Use plain, unsweetened Greek yogurt. If using frozen broccoli, thaw and drain it thoroughly first to prevent excess water from thinning the sauce.

Directions

1. Preheat the oven

Preheat your oven to 400°F (200°C).

Lightly grease a 9 × 13-inch baking dish and set it aside.

2. Season the chicken

Place the chicken pieces in a large bowl.

Add olive oil, garlic powder, Italian seasoning, smoked paprika, salt, and black pepper.

Toss until every piece is evenly coated.

High-protein cooking tip: Cutting the chicken into similarly sized pieces ensures consistent cooking without overcooking smaller pieces.

3. Sear the chicken

Heat a large skillet over medium-high heat.

Add the seasoned chicken in a single layer.

Cook for approximately 2–3 minutes per side, just until golden brown.

The chicken does not need to be completely cooked through at this point because it will finish cooking in the oven.

Transfer the chicken to the prepared casserole dish.

4. Prepare the broccoli

If using fresh broccoli, bring a pot of water to a boil.

Add the broccoli and blanch for approximately 2 minutes.

Drain immediately.

Visual cue: The broccoli should become bright green while remaining slightly firm.

If using frozen broccoli, thaw completely and pat it dry.

5. Add the broccoli

Arrange the broccoli evenly around and between the chicken pieces in the casserole dish.

Avoid piling everything into one large mound so the sauce can coat the ingredients evenly.

6. Make the creamy sauce

Return the skillet to the stovetop over medium heat.

Add the minced garlic and cook for approximately 30 seconds, just until fragrant.

Pour in the chicken broth and heavy cream.

Whisk in the cornstarch until smooth.

7. Simmer the sauce

Reduce the heat to medium-low.

Simmer for approximately 3–4 minutes, whisking frequently.

The sauce should become slightly thickened but still pourable.

8. Add the cheese

Reduce the heat to low.

Add the Parmesan and mozzarella gradually, stirring until melted and smooth.

Remove the skillet from the heat.

9. Add Greek yogurt carefully

Let the sauce cool for approximately 2 minutes.

Whisk in the Greek yogurt, Italian seasoning, black pepper, and parsley.

Important: Do not boil the sauce after adding Greek yogurt because excessive heat can cause the dairy to separate.

10. Pour over the casserole

Pour the creamy sauce evenly over the chicken and broccoli.

Use a spatula to gently distribute the sauce so that it reaches the bottom and sides of the dish.

11. Bake

Place the casserole in the 400°F (200°C) oven.

Bake uncovered for approximately 18–22 minutes.

Visual cue: The sauce should be bubbling around the edges, the cheese should be melted, and the chicken should be completely cooked.

12. Check the chicken

Insert an instant-read thermometer into the thickest chicken pieces.

The chicken should reach 165°F (74°C) internally.

13. Brown the top

For a more golden finish, switch the oven to broil for approximately 1–2 minutes.

Watch closely because the cheese can brown quickly.

14. Rest before serving

Remove the casserole from the oven and allow it to rest for 5 minutes.

This gives the sauce time to thicken slightly and settle around the chicken and broccoli.

15. Garnish and serve

Sprinkle with fresh parsley and additional Parmesan if desired.

Serve hot with a squeeze of fresh lemon for a bright flavor contrast.

Nutrition Facts

Per Serving — Approximate

Nutrient	Amount
Calories	~420 kcal
Total Fat	~19 g
Cholesterol	~125 mg
Sodium	~600 mg
Potassium	~850 mg
Total Carbohydrates	~11 g
Fiber	~3 g
Net Carbs	~8 g
Sugars	~4 g
Protein	~43 g
Calcium	~300 mg

Nutrition values are approximate and depend on the exact ingredients and brands used.

Notes

Storage: Refrigerate leftovers in airtight containers for 3–4 days or freeze individual portions for up to 2 months.

Reheating: Use moderate microwave power or a covered 325°F oven to prevent the creamy sauce from separating.

Allergy Notes: This recipe contains milk/dairy. If using packaged chicken broth or seasoning blends, check labels for additional allergens.

Gluten-Free: The ingredients listed are naturally gluten-free when using certified gluten-free chicken broth and seasonings, but always verify packaged products if gluten avoidance is important.

Flavor Boost: Add a pinch of red pepper flakes for heat, Dijon mustard for tanginess, or fresh lemon zest for brightness.

Extra Vegetables: Mushrooms, zucchini, asparagus, or spinach can be added, but high-moisture vegetables should be cooked or drained first.

Higher-Protein Tip: Choose nonfat Greek yogurt with a high protein content and lean chicken breast for the strongest protein-to-calorie ratio.

Keto-Friendly: With approximately 8g net carbs per serving, this version can fit some low-carb or keto-style meal plans, depending on individual carbohydrate targets.

Frequently Asked Questions

1. Can I use chicken thighs instead of chicken breast?

Yes, boneless skinless chicken thighs work well and will produce a richer, juicier casserole.

2. Can I use frozen broccoli?

Yes, but thaw and drain it thoroughly first to prevent excess moisture from thinning the creamy sauce.

3. Can I make this casserole ahead of time?

Yes, assemble it up to 24 hours ahead, cover tightly, refrigerate, and bake when ready.

4. Why did my creamy sauce separate?

The sauce can separate if the Greek yogurt is exposed to very high heat or boiled, so add it after removing the sauce from direct heat.

5. Can I add pasta to this casserole?

Yes, cooked low-carb pasta or regular pasta can be added, although doing so will increase the carbohydrate content.

6. How can I make the casserole even higher in protein?

Use high-protein Greek yogurt, lean chicken breast, and a protein-rich reduced-fat cheese while keeping the vegetable-to-chicken ratio generous.

Broccoli and Chicken in a Creamy Sauce Casserole