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Chicken Spinach Mushroom Bake is a creamy, cheesy casserole with tender chicken, sautéed mushrooms, and spinach baked to perfection.

Chicken Spinach Mushroom Bake

  • Author: Kenzie
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 55 minutes
  • Yield: 6 servings 1x

Description

This Chicken Spinach Mushroom Bake is a creamy, cheesy casserole made with tender chicken, fresh spinach, sautéed mushrooms, and a rich cream cheese sauce topped with golden melted mozzarella. It’s an easy family dinner that’s perfect for busy weeknights, meal prep, or entertaining guests.


Ingredients

Scale
  • 2 pounds boneless, skinless chicken breasts, cut into bite-sized pieces
  • 2 tablespoons olive oil
  • 8 ounces cremini or white mushrooms, sliced
  • 4 cups fresh baby spinach
  • 3 cloves garlic, minced
  • 8 ounces cream cheese, softened
  • ½ cup heavy cream
  • ½ cup grated Parmesan cheese
  • 2 cups shredded mozzarella cheese
  • 1 teaspoon Italian seasoning
  • 1 teaspoon onion powder
  • ½ teaspoon paprika
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • Fresh chopped parsley, for garnish (optional)

Instructions

  • Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
  • Heat the olive oil in a large skillet over medium heat. Sauté the mushrooms for 5–6 minutes until golden.
  • Add the garlic and cook for 30 seconds, then stir in the spinach and cook until just wilted. Remove from the heat.
  • In a large bowl, whisk together the softened cream cheese, heavy cream, Parmesan cheese, Italian seasoning, onion powder, paprika, salt, and black pepper until smooth.
  • Arrange the chicken pieces evenly in the prepared baking dish.
  • Spoon the mushroom and spinach mixture over the chicken.
  • Pour the creamy sauce evenly over the casserole and gently spread it to coat the chicken.
  • Sprinkle the shredded mozzarella evenly over the top.
  • Bake uncovered for 35 to 40 minutes, or until the chicken reaches 165°F (74°C) and the cheese is melted and golden.
  • Let the casserole rest for 5 to 10 minutes before serving.
  • Garnish with fresh parsley, if desired, and serve warm.

Notes

  • Sauté the mushrooms first to remove excess moisture.
  • If using frozen spinach, thaw it completely and squeeze out all the liquid.
  • Freshly shredded mozzarella melts better than pre-shredded cheese.
  • Chicken thighs can be substituted for chicken breasts.
  • Store leftovers in the refrigerator for up to 4 days or freeze for up to 2 months.

Nutrition

  • Serving Size: 1 serving
  • Calories: 485
  • Fat: 28g
  • Carbohydrates: 8g
  • Protein: 48g
  • Cholesterol: 165mg