There’s something magical about a dish that brings the family together around the table. Our Mushroom and Swiss Cheese Casserole Recipe is just that kind of dish. It’s heartwarming, earthy, and oh-so-delicious. Perfect for a cozy family breakfast or a weekend brunch, this recipe combines the rich umami flavor of mushrooms with the creamy, nutty goodness of Swiss cheese. Imagine slicing into a golden-brown crust to reveal fluffy, cheesy layers that fill the kitchen with an irresistible aroma. This recipe is a beautiful way to celebrate any occasion, and it’s sure to become a family favorite. Gather your loved ones and let’s make this delightful casserole together!

Prep Time: 15 minutes
Cook Time: 40 minutes
Total Time: 55 minutes
Servings: 6
Skill Level: Easy
Ingredients
- 1 tablespoon olive oil
- 1 medium onion, finely chopped
- 2 cloves garlic, minced
- 250 grams mushrooms, sliced
- 8 large eggs
- 1 cup whole milk
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 2 cups shredded Swiss cheese
- 1/4 cup chopped fresh parsley

Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13 inch casserole dish with olive oil and set aside.
- In a large skillet, heat the olive oil over medium heat. Add the onion and sauté until translucent, about 3-4 minutes. Add the garlic and mushrooms, cooking until the mushrooms are tender and have released their moisture, about 5-7 minutes.
- In a large bowl, whisk together the eggs, milk, salt, and black pepper until well combined.
- Spread the mushroom mixture evenly in the prepared casserole dish. Sprinkle 1 cup of the shredded Swiss cheese over the mushroom layer.
- Pour the egg mixture over the top of the mushrooms and cheese, tilting the dish as needed to ensure even distribution.
- Top with the remaining 1 cup of shredded Swiss cheese and sprinkle with chopped parsley.
- Bake in the preheated oven for 35-40 minutes, or until the casserole is set and the top is golden brown.
- Allow the casserole to cool for about 5 minutes before slicing and serving. Enjoy!
Helpful Tips
- If you’re new to baking casseroles, try using a glass or ceramic dish for even cooking.
- Add a touch of nutmeg to the egg mixture for an extra layer of flavor.
- Switch up the cheeses with Gruyere or Cheddar for a different twist.
Storage Instructions
Store leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through.
Ingredient Substitutions
If you’re out of Swiss cheese, Gruyere or a mild Cheddar cheese make excellent substitutes. For those looking to reduce calories, skim milk or almond milk can be used instead of whole milk.

Pairings
This casserole pairs wonderfully with a fresh green salad and a side of crusty bread. For drinks, consider serving with a hot cup of coffee or a refreshing glass of sparkling water with a twist of lemon.
At Zynahz, we believe that every dish brings a unique opportunity to create joyful moments in the kitchen. We hope our Mushroom and Swiss Cheese Casserole Recipe will inspire you to gather your loved ones and enjoy a delightful meal together. We’d love to see your creations, so don’t forget to share your results with us! Whether it’s a family breakfast or a special weekend brunch, this recipe is perfect for sharing with friends and family. Explore more delightful recipes on Zynahz, follow us on social media for daily inspiration, and sign up for our newsletter to never miss a delicious update!