This creamy chicken zucchini bake is a comforting, family-friendly dinner made with tender chicken, fresh zucchini, a creamy garlic sauce, and melted cheese. It is easy to assemble, naturally low in carbohydrates, and ready in about 45 minutes.
The secret to a delicious casserole is to avoid excess moisture. Lightly pre-cooking or draining the zucchini helps it stay tender without making the creamy sauce watery. Similar chicken zucchini casseroles use a covered bake followed by uncovered cooking to create a bubbling, golden cheese topping.easychickenrecipes
Why You’ll Love It
- Creamy, cheesy, and satisfying.
- Uses simple everyday ingredients.
- Naturally low-carb and gluten-free adaptable.
- Easy to prepare in one baking dish.
- Works with chicken breasts or thighs.
- Excellent for leftovers and meal prep.
Ingredients
Chicken and vegetables
- 1½ pounds boneless, skinless chicken breasts or thighs, cut into bite-sized pieces.
- 4 medium zucchini, sliced or diced.
- 1 small yellow onion, diced.
- 2 cloves garlic, minced.
- 1 tablespoon olive oil.
- 1 teaspoon Italian seasoning.
- ½ teaspoon paprika.
- Salt and black pepper, to taste.
Creamy sauce
- ½ cup chicken broth.
- ½ cup plain Greek yogurt or sour cream.
- 4 ounces cream cheese, softened.
- ½ cup grated Parmesan cheese, divided.
- 1 cup shredded mozzarella cheese.
- 1 tablespoon chopped fresh parsley, optional.
Instructions
Prepare the oven and zucchini
Preheat the oven to 375°F.
Lightly grease a 9×13-inch baking dish.
Place the sliced zucchini in a colander and sprinkle lightly with salt. Let it stand for 10 minutes, then pat it dry with paper towels.
For an even firmer texture, spread the zucchini on a baking sheet and roast it for 10 minutes before assembling the casserole.
Season and sear the chicken
Place the chicken pieces in a bowl. Add the paprika, Italian seasoning, salt, and black pepper. Toss until evenly coated.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken in a single layer and cook for 3–4 minutes per side, until browned but not completely cooked through. Transfer the chicken to a plate.
Cook the aromatics
Add the diced onion to the same skillet and sauté until softened, about 2–3 minutes.
Add the minced garlic and cook for 30 seconds, stirring constantly.
Pour in the chicken broth and scrape the bottom of the skillet to loosen any browned bits.
Make the creamy sauce
Reduce the heat to low. Add the softened cream cheese and stir until it begins to melt into the broth.
Remove the skillet from the heat and stir in the Greek yogurt or sour cream and ¼ cup of Parmesan cheese.
Mix until the sauce is smooth. Avoid boiling the sauce after adding the yogurt, as high heat can cause it to separate.
Assemble the casserole
Arrange the zucchini and onion mixture in the prepared baking dish.
Place the seared chicken over the vegetables and pour the creamy sauce evenly over everything.
Sprinkle the mozzarella and remaining Parmesan over the top.
Bake
Cover the baking dish with aluminum foil and bake for 25 minutes.
Remove the foil and continue baking for 10–15 minutes, until the chicken reaches an internal temperature of 165°F and the cheese is melted and golden.
Let the casserole rest for 5–10 minutes before serving. Garnish with fresh parsley if desired.
Recipe Tips
- Pat the zucchini dry before adding it to the casserole.
- Do not fully cook the chicken in the skillet; it will finish cooking in the oven.
- Use chicken thighs for a richer, juicier casserole.
- Use chicken breasts for a leaner option, but avoid overcooking them.
- Do not boil the creamy sauce after adding Greek yogurt or sour cream.
- Let the casserole rest before serving so the sauce thickens slightly.
- For a crispier top, broil for 1–2 minutes at the end.
Ingredient Substitutions
Dairy
Replace Greek yogurt with sour cream, light cream, or plain dairy-free yogurt. Use dairy-free cream cheese and shredded cheese if needed.
Cheese
Mozzarella can be replaced with Monterey Jack, provolone, cheddar, or a mild Italian cheese blend.
Vegetables
Add sliced mushrooms, bell peppers, spinach, broccoli, asparagus, or cherry tomatoes.
Protein
Use cooked rotisserie chicken to save time. Turkey can also replace the chicken.
Serving Suggestions
Serve creamy chicken zucchini bake with:
- A crisp green salad.
- Roasted broccoli.
- Cauliflower rice.
- Green beans.
- Garlic bread.
- Quinoa or brown rice.
- Fresh parsley and lemon wedges.
For a low-carb meal, serve it with salad, steamed vegetables, or cauliflower rice.
Make-Ahead Instructions
Prepare the chicken, zucchini, and creamy sauce up to 1 day in advance. Store the components separately in the refrigerator.
Assemble the casserole shortly before baking. If baking it directly from the refrigerator, add approximately 5–10 minutes to the covered baking time.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to 3–4 days.
Reheat individual portions in the microwave, or warm the casserole in a covered oven-safe dish at 350°F until hot.
Freezing is not recommended because zucchini and dairy-based sauces may become watery after thawing.
Frequently Asked Questions
Can I use rotisserie chicken?
Yes. Shred or dice the cooked chicken and add it directly to the casserole. Since it is already cooked, reduce the baking time and bake only until the vegetables are tender and the cheese is bubbling.
How do I stop the casserole from becoming watery?
Salt and pat the zucchini dry before using it. You can also roast or sauté the zucchini briefly to remove some moisture.
Can I use chicken thighs?
Yes. Boneless, skinless chicken thighs are flavorful and remain tender during baking.
Can I make this casserole without cream cheese?
Yes. Use extra Greek yogurt, sour cream, or a small amount of heavy cream. The sauce may be slightly thinner.
Is this recipe keto-friendly?
It can fit many low-carbohydrate meal plans because it contains chicken, zucchini, cream cheese, and cheese without pasta or rice. Check the nutrition of your specific ingredients for an accurate carbohydrate count.
Nutrition Information
Nutrition will vary depending on the chicken cut, cheese, cream cheese, yogurt, and serving size used.
