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Irresistible rotisserie chicken zucchini casserole is shown baked to golden brown perfection, highlighting the cheesy topping and fresh zucchini slices.

BEST Rotisserie Chicken Zucchini Casserole

Avatar photoAmelia Chen-Morrison
Transform leftover rotisserie chicken into a comforting and flavorful casserole with zucchini, cheese, and a creamy sauce. This easy-to-make dish is perfect for a weeknight dinner and a great way to use up garden zucchini. The combination of savory chicken, tender zucchini, and bubbly cheese creates a satisfying and delicious meal the whole family will love.
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Course Main Course
Cuisine American
Servings 6
Calories 450 kcal

Equipment

  • 9x13 inch baking dish
  • Large skillet
  • Large bowl
  • Small bowl
  • Measuring cups and spoons
  • Oven
  • Grater
  • Knife
  • Cutting board

Ingredients
  

  • 3 cups shredded rotisserie chicken
  • 2 medium zucchini, diced
  • 1 medium onion, diced
  • 2 cloves garlic, minced
  • 1 cup sour cream
  • 1 ½ cups shredded cheddar cheese, divided
  • 1 teaspoon Italian seasoning
  • ½ teaspoon salt, or to taste
  • ¼ teaspoon black pepper, or to taste
  • ½ cup bread crumbs, plain or Italian seasoned
  • 2 tablespoons butter, melted
  • Cooking spray or oil

Instructions
 

  • Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
  • In a large skillet, sauté the diced onion over medium heat until softened, about 5 minutes.
  • Add the minced garlic and cook for another minute until fragrant, being careful not to burn it.
  • Add the diced zucchini to the skillet and cook until tender-crisp, about 7-10 minutes, stirring occasionally.
  • In a large bowl, combine the cooked zucchini and onion mixture, shredded rotisserie chicken, cream of chicken soup, sour cream, 1 cup of shredded cheddar cheese, Italian seasoning, salt, and pepper.
  • Mix well to combine all the ingredients thoroughly.
  • Pour the chicken and zucchini mixture into the prepared baking dish, spreading it evenly.
  • In a small bowl, combine the bread crumbs and melted butter.
  • Sprinkle the bread crumb mixture evenly over the top of the casserole.
  • Sprinkle the remaining 1/2 cup of shredded cheddar cheese over the bread crumbs.
  • Bake in the preheated oven for 20-25 minutes, or until the casserole is heated through, the cheese is melted and bubbly, and the bread crumbs are golden brown.
  • Let the casserole stand for 5-10 minutes before serving.

Notes

For a spicier casserole, add a pinch of red pepper flakes or a dash of hot sauce to the zucchini mixture. You can also add other vegetables like bell peppers, mushrooms, or corn. Experiment with different types of cheese, such as mozzarella or Monterey Jack. Leftover casserole can be stored in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until heated through. For best results, use a high-quality rotisserie chicken. You can assemble the casserole ahead of time and store it in the fridge until you're ready to bake it, just add a few extra minutes to the baking time.