A delicious creamy, cheesy chicken and zucchini casserole that’s comforting, easy to prepare, and perfect for a family dinner. The zucchini becomes tender while the chicken stays juicy under a golden layer of melted cheese.
Ingredients
Chicken & Vegetables
- 2 large boneless, skinless chicken breasts — about 1½ lb (680 g)
- 3 medium zucchini, sliced into thin half-moons
- 1 small yellow onion, finely diced
- 3 cloves garlic, minced
- 1 tablespoon olive oil
Creamy Sauce
- ½ cup cream cheese, softened
- ½ cup sour cream or plain Greek yogurt
- ½ cup chicken broth
- ½ teaspoon salt
- ½ teaspoon black pepper
- 1 teaspoon Italian seasoning
- ½ teaspoon paprika
- ¼ teaspoon garlic powder
Cheese Topping
- 1 cup shredded mozzarella cheese
- ½ cup freshly grated Parmesan cheese
- 2 tablespoons chopped fresh parsley
Instructions
1. Prepare the oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9 × 13-inch (23 × 33 cm) baking dish with cooking spray or a little olive oil.
2. Cook the chicken
Cut the chicken breasts into bite-sized pieces.
Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add the chicken and season lightly with a little salt, pepper, and paprika.
Cook for approximately 5–7 minutes, stirring occasionally, until the chicken is cooked through and reaches 165°F (74°C) internally.
Transfer the chicken to a plate and set aside.
3. Sauté the vegetables
Using the same skillet, add the diced onion.
Cook for 3–4 minutes, until softened.
Add the minced garlic and cook for another 30 seconds.
Add the sliced zucchini and cook for 4–5 minutes. Stir occasionally.
Tip: Don’t cook the zucchini until completely soft at this stage. It will continue cooking in the oven.
4. Make the creamy sauce
In a medium bowl, combine:
- Cream cheese
- Sour cream or Greek yogurt
- Chicken broth
- Italian seasoning
- Paprika
- Garlic powder
- Black pepper
- Salt
Whisk until the mixture is as smooth as possible.
If the cream cheese is difficult to mix, let it sit at room temperature for a few minutes before making the sauce.
5. Combine everything
Return the cooked chicken to the skillet with the zucchini and onions.
Pour the creamy sauce over the chicken and vegetables.
Stir gently until everything is evenly coated.
6. Assemble the casserole
Transfer the chicken-zucchini mixture to the prepared baking dish.
Spread it into an even layer.
Sprinkle the mozzarella evenly over the top, followed by the Parmesan cheese.
7. Bake
Place the casserole in the preheated oven.
Bake uncovered for 25–30 minutes, until the sauce is bubbling and the cheese has melted and turned lightly golden.
For an extra-golden top, switch to broil for 1–2 minutes, watching carefully so the cheese doesn’t burn.
8. Rest and serve
Remove the casserole from the oven and let it rest for 5–10 minutes.
Sprinkle with fresh chopped parsley.
Serve warm.
Recipe Details
- Prep Time: 15 minutes
- Cook Time: 35–40 minutes
- Total Time: About 50–55 minutes
- Servings: 6
- Cuisine: American-inspired
- Difficulty: Easy
Helpful Tips
- Prevent watery zucchini: Salt sliced zucchini lightly and let it sit for 10 minutes. Pat it dry with paper towels before cooking.
- For extra flavor: Add a pinch of red pepper flakes or a little fresh basil.
- For more vegetables: Add sliced mushrooms, spinach, bell peppers, or cherry tomatoes.
- For a crispy topping: Mix a few tablespoons of Parmesan with breadcrumbs and sprinkle over the cheese before baking.
- For a lighter version: Use plain Greek yogurt instead of sour cream and reduced-fat mozzarella.
- For meal prep: Portion the cooled casserole into airtight containers and refrigerate.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3–4 days.
Reheat individual portions in the microwave until heated through, or reheat the entire casserole covered in a 350°F (175°C) oven.
Q&A
Q: Can I use cooked rotisserie chicken?
Yes. Shredded or diced rotisserie chicken works very well and saves preparation time.
Q: Can I use yellow squash instead of zucchini?
Yes. Yellow squash can be substituted in equal amounts.
Q: Can I make this without cream cheese?
Yes. Increase the Greek yogurt or sour cream and add a little extra Parmesan for flavor.
Q: Can I prepare it ahead of time?
Yes. Assemble the casserole, cover it, and refrigerate for up to about 24 hours. Add a few extra minutes to the baking time if it’s going directly from the refrigerator to the oven.
Q: How do I stop the casserole from becoming watery?
The most important step is removing excess moisture from the zucchini. Don’t overcook it before baking, and pat it dry after salting.
Q: Can I freeze Chicken Zucchini Bake?
You can, although zucchini may become softer after freezing and thawing. For best texture, freeze portions after cooking and cool them completely first.
Q: What can I serve with it?
Serve with a green salad, roasted vegetables, cauliflower rice, or crusty bread for a complete meal.