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Golden brown creamy chicken mushroom casserole topped with melted mozzarella and fresh herbs.

Creamy Mediterranean Chicken Mushroom Casserole

This Chicken Mushroom Casserole recipe reimagines a classic comfort dish through a Mediterranean lens. By swapping heavy canned creams for protein-rich Greek yogurt and tangy feta, we’ve created a velvety, savory bake that is both indulgent and wholesome.
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Prep Time 15 minutes
Cook Time 30 minutes
Servings: 6
Course: Main Course
Cuisine: Mediterranean
Calories: 385
Ingredients Equipment Method Notes

Ingredients
  

  • 1.5 lbs cooked chicken breast diced
  • 1 lb cremini mushrooms sliced
  • 2 tbsp extra virgin olive oil
  • 4 cloves garlic minced
  • 8 oz cream cheese softened
  • 1 cup plain Greek yogurt
  • 1/2 cup crumbled feta cheese
  • 1.5 cups shredded mozzarella
  • 1 tsp dried oregano or 1 tbsp fresh
  • 1 tsp fresh thyme
  • 1/2 tsp smoked paprika
  • Zest of 1 lemon
  • Salt and pepper to taste

Equipment

  • 1 9×13 inch baking dish
  • 1 Large Skillet (12-inch)
  • 1 Large Mixing Bowl
  • 1 Whisk & Rubber Spatula
  • 1 Chef’s Knife & Cutting Board
  • 1 Microplane or Fine Grater

Method
 

  1. Preheat oven to 375°F.
  2. Sauté mushrooms in olive oil until browned and moisture is gone. Add garlic and herbs for 1 minute.
  3. Mix cream cheese, yogurt, feta, lemon zest, and spices in a bowl.
  4. Stir in chicken and mushrooms.
  5. Transfer to a 9x13 baking dish. Top with mozzarella.
  6. Bake for 25-30 minutes. Let rest 10 minutes before serving.

Notes

  • The Golden Rule: Always sauté your mushrooms until they are deeply browned. This "Maillard reaction" is what gives the casserole its rich, umami depth.
  • Chicken Hack: Use a store-bought rotisserie chicken to cut your prep time in half without sacrificing flavor.
  • Yogurt Tip: Use full-fat Greek yogurt to prevent the sauce from breaking or becoming too thin during the baking process.
  • Herb Swap: If you don't have fresh oregano, use 1/3 the amount of dried oregano, as it is more concentrated.