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Ultimate Creamy Spinach Chicken Casserole: Easy Weeknight Dinner Recipe


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  • Author: Madilyn
  • Total Time: 30 min

Ingredients

1 lb chicken breasts (2 large breasts, halved crosswise)

8 oz fresh spinach

8 oz Monterey Jack cheese, shredded

Creamy Sauce:

½ cup mayonnaise

½ cup sour cream

½ cup parmesan cheese, grated

½ tsp ground black pepper

1 tsp garlic salt


Instructions

  1. Preheat oven to 500°F and lightly spray a 13×9-inch baking dish.
  2. In a bowl, combine mayonnaise, sour cream, parmesan, garlic salt, and black pepper. Mix until smooth.
  3. Layer fresh spinach in the bottom of the baking dish.
  4. Place raw chicken breasts on top of the spinach.
  5. Spread the creamy sauce evenly over the chicken.
  6. Sprinkle shredded Monterey Jack cheese on top.
  7. Bake on the bottom rack for 20–25 minutes, until spinach wilts and chicken is cooked through.

Notes

  • Use an oven-safe baking dish suitable for high heat.
  • Adjust seasonings carefully; the sauce already contains salt.
  • For frozen spinach, squeeze out excess water before layering.
  • Optional: Add a layer of parboiled rice or cauliflower to absorb extra moisture.
  • Leftovers can be stored in the fridge for up to 3 days.
  • Prep Time: 5 min
  • Cook Time: 25 min