Baked Potato and Zucchini Casserole with Chicken and Mushrooms

This Baked Potato and Zucchini Casserole combines hearty potatoes, tender chicken, and savory mushrooms in a rich, creamy base, topped with melty Emmental cheese. Paired with a refreshing Greek yogurt and cucumber sauce, this dish is a wholesome, comforting meal that’s easy to prepare yet impressive enough for any occasion. The casserole is baked to golden perfection, making it a satisfying choice for lunch or dinner. Let’s get started!

Ingredients

For the Casserole:

  • 5 medium potatoes, grated or thinly sliced
  • 1 zucchini, grated
  • 4 eggs
  • 1 tsp salt
  • 1 tsp black pepper
  • 1 tsp oregano
  • 100 ml (3 fl oz) cream
  • 3 tbsp flour
  • 150 g (5 oz) Emmental cheese, grated
  • 1 onion, finely chopped
  • 2 cloves garlic, minced
  • 2 chicken fillets, diced
  • 150 g (5 oz) mushrooms, sliced
  • Olive oil, for cooking

For the Yogurt Sauce:

  • Greek yogurt, as needed (about 1 cup)
  • 1 tsp mustard
  • 1 mini cucumber, grated
  • Juice of 1 lemon
  • Fresh parsley, chopped (for garnish)

Step-by-Step Instructions

1. Prepare the Chicken and Vegetables

Start by cooking the chicken and sautéing the vegetables:

  • In a large pan, heat a small amount of olive oil over medium heat. Add the diced chicken fillets and cook until golden and fully cooked, which should take about 5–7 minutes.
  • Once the chicken is browned, add the sliced mushrooms, chopped onion, and minced garlic to the pan. Sauté the mixture until the vegetables are soft and the mushrooms release their moisture. This should take another 4–5 minutes.
  • Remove the pan from heat and set the sautéed chicken and vegetables aside.

2. Prepare the Batter

While the chicken and vegetables cool, prepare the egg mixture that will hold the casserole together:

  • In a large bowl, whisk together 4 eggs, 1 tsp salt, 1 tsp black pepper, and 1 tsp oregano. Make sure the eggs are well-beaten and seasoned.
  • Add the cream (100 ml) and whisk until smooth and fully combined.
  • Gradually stir in 3 tbsp flour, mixing continuously to avoid lumps. The mixture should form a smooth batter.

3. Combine the Ingredients

Now it’s time to bring all the components of the casserole together:

  • Add the grated potatoes, grated zucchini, and 150 g (5 oz) Emmental cheese into the egg mixture. Stir well until all the vegetables and cheese are fully coated with the egg batter.
  • Next, fold in the sautéed chicken, mushrooms, onions, and garlic. Mix thoroughly to evenly distribute the ingredients throughout the mixture.

4. Bake the Casserole

Preheat your oven to 375°F (190°C) while you prepare the baking dish.

  • Grease a baking dish with a small amount of olive oil to prevent sticking.
  • Pour the prepared mixture into the baking dish, spreading it out evenly with a spatula.
  • Bake the casserole in the preheated oven for 40–45 minutes, or until the top is golden brown and the center is set. You can test the doneness by inserting a knife or toothpick into the center—if it comes out clean, the casserole is ready.

5. Prepare the Yogurt Sauce

While the casserole is baking, make the refreshing yogurt sauce:

  • In a medium bowl, combine Greek yogurt (about 1 cup), 1 tsp mustard, grated mini cucumber, and the juice of 1 lemon. Stir until all the ingredients are well-blended.
  • Add a pinch of salt and black pepper to taste, and adjust the flavors as needed.
  • Garnish the sauce with chopped fresh parsley for a burst of color and freshness.
  • Place the sauce in the refrigerator to chill until serving.

6. Serve

Once the casserole is baked to golden perfection, remove it from the oven and let it rest for a few minutes to firm up slightly.

  • Slice the casserole into squares or portions, depending on your preference.
  • Serve each slice with a generous spoonful of the chilled Greek yogurt sauce on the side. The creamy, tangy sauce perfectly complements the hearty casserole.

Nutrition Information (Per Serving)

  • Serving Size: 1 portion (makes 6 servings)
  • Calories: 350 kcal
  • Protein: 25 g
  • Fat: 18 g
  • Carbohydrates: 28 g
  • Fiber: 3 g
  • Sugar: 5 g
  • Sodium: 500 mg
  • Cholesterol: 175 mg

Final Thoughts

This Baked Potato and Zucchini Casserole with Chicken and Mushrooms is a wonderfully balanced meal that combines tender chicken, nutritious vegetables, and a deliciously cheesy, creamy texture. The yogurt sauce adds a refreshing contrast, making each bite light and flavorful. It’s an ideal dish for busy weeknights or when you want to prepare a hearty, satisfying meal without too much effort. You can even make it ahead and reheat the leftovers, making it a versatile and convenient option. Enjoy this tasty and wholesome casserole with your family or friends!