Chicken Spinach Mushroom Casserole (Print Version)

A creamy and cheesy chicken bake with spinach, mushrooms, and rich cheeses for a satisfying low-carb meal.

# What You'll Need:

→ Proteins

01 - 2 cups cooked chicken breast, chopped or shredded

→ Vegetables

02 - 4 cups fresh spinach
03 - 2 cups mushrooms, sliced
04 - 1 small onion, finely chopped
05 - 3 cloves garlic, minced

→ Dairy

06 - 1 cup mozzarella cheese, shredded
07 - 1/4 cup parmesan cheese, grated
08 - 1/2 cup heavy cream

→ Oils & Seasonings

09 - 2 tablespoons olive oil
10 - 1 teaspoon Italian seasoning
11 - Salt and pepper to taste

# How-To Steps:

01 - Preheat oven to 375°F. Lightly grease a 9x13 inch casserole dish.
02 - Heat olive oil in a large skillet over medium heat. Add onions and mushrooms, sauté for 5-7 minutes until soft and lightly browned.
03 - Add minced garlic and cook for 1 minute until fragrant.
04 - Stir in spinach and cook until wilted. Season the mixture with salt, pepper, and Italian seasoning.
05 - Spread cooked chicken evenly across the bottom of the prepared casserole dish.
06 - Layer the sautéed mushroom, spinach, and onion mixture over the chicken.
07 - Drizzle heavy cream evenly over the top.
08 - Sprinkle mozzarella and parmesan cheese over the entire dish.
09 - Bake uncovered for 20-25 minutes until the cheese is melted and golden brown.
10 - Remove from oven and let rest for 5 minutes before serving.

# Expert Advice:

01 -
  • It's a complete protein-packed meal that keeps you satisfied for hours
  • The dish comes together in just 40 minutes from start to finish
  • Low in carbs but high in flavor, making it perfect for keto and gluten-free diets
  • Versatile enough to use leftover or rotisserie chicken for convenience
  • Makes excellent leftovers that reheat beautifully for lunches
02 -
  • Use rotisserie chicken to save significant prep time
  • For even more flavor, marinate the chicken in Italian herbs before cooking if starting with raw chicken
  • Make sure to sauté mushrooms in batches if necessary - overcrowding the pan will steam rather than brown them
  • Pat the spinach dry after washing to reduce excess water in the dish
  • Let the casserole rest after baking to allow the sauce to thicken slightly
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