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Golden bubbly chicken and spinach casserole fresh from the oven in a white baking dish

Creamy Chicken and Spinach Casserole

A rich and comforting casserole featuring tender chicken, fresh spinach, and a creamy cheese sauce. Perfect for busy weeknight dinners.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 portions
Course: Dinner, Main Course
Cuisine: American
Calories: 350
Ingredients Equipment Method Notes

Ingredients
  

  • 2-3 cups cooked and shredded chicken rotisserie chicken works great
  • 4 cups fresh spinach or 1 package frozen spinach, thawed and drained
  • 8 ounces cream cheese softened to room temperature
  • 1/2 cup sour cream
  • 1 cup shredded mozzarella cheese
  • 1/4 cup grated Parmesan cheese
  • 2 cloves garlic minced
  • 1 small onion finely chopped
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1 pinch nutmeg optional

Equipment

  • 9x13 inch casserole dish
  • Large mixing bowl
  • Sauté pan (if using fresh spinach)
  • Measuring cups and spoons
  • Wooden spoon or spatula

Method
 

  1. Preheat your oven to 375°F and grease a 9x13 inch casserole dish with butter or cooking spray. If using fresh spinach, sauté it in a pan over medium heat for 2-3 minutes until wilted, then set aside to cool. If using frozen spinach, thaw completely and squeeze out all excess moisture using a clean kitchen towel.
  2. In a large mixing bowl, combine the softened cream cheese, sour cream, minced garlic, chopped onion, salt, pepper, and nutmeg. Stir vigorously until completely smooth and well-blended with no lumps, about 2 minutes.
  3. Add the shredded chicken and prepared spinach to the greased casserole dish. Pour the creamy sauce mixture over the top and gently fold everything together using a spatula, stirring from bottom to top until evenly combined. Spread into an even layer.
  4. Sprinkle the mozzarella cheese and Parmesan cheese evenly across the top of the casserole.
  5. Bake uncovered for 25-30 minutes until the cheese is golden brown and bubbling around the edges. The center should be set when gently shaken. Remove from oven and let rest for 5 minutes before serving to allow the sauce to thicken.

Notes

For best results, thoroughly drain spinach to prevent a watery casserole. This dish is freezer-friendly and can be made ahead. Store leftovers covered in the refrigerator for up to 4 days. Each serving is approximately 1.5 cups. Time listed assumes use of pre-cooked chicken; add 20-25 minutes if cooking raw chicken.