Why I’ll Love This Recipe

I love how this casserole combines protein, vegetables, and rice into one complete meal. The zucchini keeps the dish fresh and tender, while the cheese creates a rich, creamy texture that everyone enjoys. I also appreciate that everything bakes together in one dish, making both preparation and cleanup wonderfully simple.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Boneless, skinless chicken breasts or thighs, cooked and diced
Cooked white or brown rice
Zucchini, diced or sliced
Yellow onion, diced
Garlic cloves, minced
Olive oil
Cream of chicken soup
Sour cream or plain Greek yogurt
Chicken broth
Cheddar cheese, shredded
Mozzarella cheese, shredded
Parmesan cheese, grated
Italian seasoning
Garlic powder
Onion powder
Fine sea salt
Black pepper

Optional Topping

Panko breadcrumbs
Melted butter
Extra shredded cheddar cheese
Chopped fresh parsley

Directions

I preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
I heat the olive oil in a skillet and cook the onion until softened, then stir in the garlic and cook for another minute.
I combine the cooked chicken, cooked rice, zucchini, sautéed onion, garlic, cream of chicken soup, sour cream, chicken broth, Italian seasoning, garlic powder, onion powder, salt, and black pepper in a large bowl.
I fold in most of the cheddar, mozzarella, and Parmesan cheese, reserving a little for the topping.
I spread the mixture evenly into the prepared baking dish.
I sprinkle the remaining cheese over the top.
I mix the panko breadcrumbs with the melted butter and scatter them over the cheese if I want a crispy topping.
I bake for 30–35 minutes, or until the casserole is hot, bubbly, and lightly golden.
I let the casserole rest for about 10 minutes before serving.
I garnish it with fresh parsley for a bright finishing touch.

Servings and Timing

Servings: 6
Prep Time: 20 minutes
Cook Time: 35 minutes
Rest Time: 10 minutes
Total Time: About 1 hour 5 minutes

Variations

I substitute rotisserie chicken to make the recipe even quicker.
I use broccoli or spinach instead of zucchini for a different vegetable option.
I replace the cheddar with Monterey Jack or Colby cheese for a milder flavor.
I stir cooked mushrooms into the casserole for extra heartiness.
I add a pinch of crushed red pepper flakes when I want a little heat.

Storage/Reheating

I store leftover casserole in an airtight container in the refrigerator for up to 4 days. For longer storage, I freeze individual portions or the entire casserole for up to 3 months. When I’m ready to serve it again, I reheat it in a 350°F (175°C) oven until warmed through or microwave individual servings. If the casserole seems dry after reheating, I stir in a splash of chicken broth before serving.

FAQs

Can I use uncooked rice?

I recommend using fully cooked rice because uncooked rice won’t have enough liquid or time to cook properly during baking.

Can I prepare this casserole ahead of time?

Yes. I assemble the casserole, cover it tightly, and refrigerate it for up to 24 hours before baking.

Do I need to peel the zucchini?

No. I leave the skin on because it becomes tender during baking and adds color and nutrients.

Can I freeze this casserole?

Yes. I wrap it tightly after it cools and freeze it for up to 3 months. I thaw it overnight in the refrigerator before reheating.

What cheese works best?

I like combining cheddar, mozzarella, and Parmesan because they provide a creamy texture, great meltability, and plenty of flavor.

Conclusion

I think this Cheesy Zucchini Chicken and Rice Bake is the perfect one-dish meal for busy days and cozy family dinners. The tender chicken, creamy rice, fresh zucchini, and layers of melted cheese create a comforting casserole that’s both filling and delicious. Whether I’m meal prepping for the week or serving it fresh from the oven, it’s always a recipe I’m happy to make again.

Cheesy Zucchini Chicken and Rice Bake

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This cheesy zucchini chicken and rice bake is a creamy, comforting casserole loaded with tender chicken, fluffy rice, fresh zucchini, and plenty of melted cheese. It’s an easy one-dish dinner that’s perfect for busy weeknights or family meals.

Author: Laura
Prep Time: 20 minutes
Cook Time: 35 minutes
Total Time: 1 hour 5 minutes
Yield: 6 servings
Category: Main Course
Method: Bake
Cuisine: American
Diet: Gluten Free

Instructions

Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
Heat the olive oil in a skillet over medium heat. Cook the onion until softened, then stir in the garlic and cook for 1 minute.
In a large bowl, combine the cooked chicken, cooked rice, zucchini, sautéed onion, garlic, cream of chicken soup, sour cream or Greek yogurt, chicken broth, Italian seasoning, garlic powder, onion powder, salt, and black pepper.
Fold in most of the cheddar, mozzarella, and Parmesan cheese, reserving some for the topping.
Spread the mixture evenly into the prepared baking dish.
Sprinkle the reserved cheeses evenly over the top.
If using, mix the panko breadcrumbs with the melted butter and scatter over the cheese.
Bake for 30 to 35 minutes, or until the casserole is hot, bubbly, and lightly golden.
Let the casserole rest for 10 minutes before serving.
Garnish with chopped fresh parsley and serve warm.

Notes

Rotisserie chicken is a great time-saving substitute.
Broccoli, spinach, or mushrooms can replace the zucchini.
Use cooked rice for the best texture and even baking.
Store leftovers in an airtight container in the refrigerator for up to 4 days or freeze for up to 3 months.
Reheat with a splash of chicken broth if the casserole becomes too thick or dry.

Nutrition

Serving Size: 1 serving
Calories: 510 kcal
Sugar: 5 g
Sodium: 780 mg
Fat: 25 g
Saturated Fat: 12 g
Unsaturated Fat: 10 g
Trans Fat: 0 g
Carbohydrates: 31 g
Fiber: 2 g
Protein: 40 g
Cholesterol: 115 mg