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spinach chicken casserole
Isla Marie

Spinach Chicken Casserole

This spinach chicken casserole is a warm, comforting, and delicious baked dish made with tender chicken, creamy spinach mixture, garlic, and melted cheese. It’s simple to assemble, low-carb, nutritious, and perfect for weeknight dinners, potlucks, or meal prep. Rich, cheesy, and full of flavor — a family favorite every time.
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Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 6 people
Course: Casserole, Dinner, Main Course
Cuisine: American, Low-Carb
Calories: 350
Ingredients Equipment Method Notes

Ingredients
  

  • Main Ingredients
  • 1.5 –2 lbs chicken breasts cut into cubes or strips
  • 3 cups fresh spinach or 1.5 cups frozen, thawed & drained
  • 8 oz cream cheese softened
  • 1/2 cup heavy cream or sour cream
  • 1 cup shredded mozzarella or cheddar cheese
  • 3 garlic cloves minced
  • 1 teaspoon onion powder
  • 1 teaspoon paprika
  • Salt and pepper to taste
  • Optional Add-Ins
  • 1/4 cup grated Parmesan cheese
  • 1 cup sliced mushrooms
  • 1/4 cup sun-dried tomatoes
  • 1 teaspoon Italian seasoning
  • 1/2 teaspoon red chili flakes
  • 1 tablespoon lemon juice
  • Fresh parsley for garnish

Equipment

  • 9×13 baking dish
  • Mixing bowl
  • Cutting board & knife
  • Spatula or spoon
  • Oven

Method
 

  1. Season the Chicken:
  2. Toss chicken pieces with paprika, garlic powder, onion powder, salt, and pepper. This ensures every piece is seasoned before baking.
  3. Prepare the Spinach Mixture:
  4. In a bowl, mix softened cream cheese, heavy cream or sour cream, minced garlic, and optional Parmesan or herbs. Fold in the spinach until fully incorporated.
  5. Assemble the Casserole:
  6. Lightly grease a baking dish. Spread seasoned chicken evenly, then cover with the spinach mixture. Make sure all chicken is coated.
  7. Add Cheese:
  8. Sprinkle mozzarella or cheddar cheese over the top to create a melty, golden crust.
  9. Bake:
  10. Bake at 375°F (190°C) for 25–30 minutes, or until the chicken is fully cooked and the cheese is bubbly and lightly golden.
  11. Rest & Serve:
  12. Let the casserole rest for 5 minutes before slicing. Garnish with parsley and serve warm.

Notes

For extra creaminess, add Parmesan cheese to the spinach mixture.
Drain frozen spinach very well to avoid a watery casserole.
Chicken thighs can be used for a richer, juicier texture.
Add lemon juice at the end to brighten flavors.
Keeps well for 3–4 days in the fridge; reheats perfectly.
Freezes well for up to 2 months — thaw overnight before reheating.