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Creamy Chicken and Spinach Casserole – A Cozy, One-Dish Comfort Meal

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A cozy, creamy baked casserole with tender chicken, spinach, and cheese. Perfect for family dinners or meal prep.

Ingredients

Scale
  • 3 cups cooked chicken, shredded

  • 56 cups fresh spinach or 10 oz frozen (thawed & squeezed)

  • 3 tbsp butter

  • 1 onion, chopped

  • 3 garlic cloves, minced

  • 3 tbsp all-purpose flour

  • 1 1/2 cups chicken broth

  • 1 cup whole milk or half-and-half

  • 1 cup shredded mozzarella

  • 1/4 cup grated Parmesan

  • 1 tsp Italian seasoning

  • Salt & pepper, to taste

  • Optional: red pepper flakes, 2 cups cooked pasta or rice

Instructions

  • Preheat oven to 375°F. Grease a 9×13-inch baking dish.

  • In a skillet, melt butter. Sauté onion 3–4 mins, then add garlic.

  • Stir in flour and cook 1 min. Gradually add broth, then milk. Simmer 5 mins until thick.

  • Add spinach and stir until wilted. Add cheese and seasonings.

  • Stir in chicken and cooked pasta or rice (if using).

  • Pour into baking dish, top with more cheese.

  • Bake 20–25 mins until bubbly. Broil 2–3 mins for golden top.

  • Let rest 5 mins before serving.

Notes

  • Freeze after baking or prep ahead and refrigerate.

  • Add mushrooms, broccoli, or bacon for variation.

  • Use gluten-free flour or dairy alternatives as needed.