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Close-up of seared chicken and wilted spinach in a creamy sauce. (Keto Chicken and Spinach Casserole)

Keto Chicken and Spinach Casserole with Mushrooms and Mozzarella

A rich and creamy Keto Chicken and Spinach Casserole featuring seared golden chicken, earthy cremini mushrooms, and wilted spinach under a blanket of bubbling mozzarella cheese. Low-carb comfort food at its finest.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 people
Course: Dinner, Main Course
Cuisine: American
Calories: 485
Ingredients Equipment Method Notes

Ingredients
  

Recipe Ingredients
  • 1.5 lbs chicken breast cut into 1-inch pieces
  • 8 oz cremini mushrooms sliced
  • 5 oz fresh baby spinach
  • 1.5 cups mozzarella cheese shredded
  • 1 cup heavy cream
  • 4 oz cream cheese softened
  • 3 cloves garlic minced
  • 1 tbsp avocado oil
  • 1 tbsp butter
  • 2 tbsp fresh parsley chopped
  • 1 pinch red pepper flakes

Equipment

  • 1 Large Skillet Oven-safe if possible
  • 1 9x13 Baking Dish White ceramic preferred for visual appeal

Method
 

Preparation
  1. Season chicken with salt and pepper. Heat oil in a skillet and sear chicken until golden-brown. Remove and set aside.
  2. Melt butter in the same skillet. Add mushrooms and sauté until browned. Stir in garlic and then fresh spinach until wilted.
  3. Add heavy cream and cream cheese to the skillet. Whisk until smooth and bubbling.
  4. Combine chicken and sauce in a baking dish. Top with mozzarella and bake at 375°F (190°C) for 15-20 minutes until golden.

Notes

Use freshly grated mozzarella for the best melt.
If the sauce is too thin, simmer for an extra 2-3 minutes before adding to the baking dish.