Mediterranean Mushroom, Swiss & Green Onion Crustless Quiche
This crustless quiche is light, savory, and perfect for breakfast, brunch, or a simple dinner. The mushrooms bring an earthy flavor, the Swiss cheese adds a smooth richness, and the green onions brighten everything up. Since there’s no crust, it cooks faster and feels lighter, but you still get all the comfort of a classic quiche. It’s an easy dish to prepare, and you can customize it with herbs and vegetables you already have. Serve it warm with a fresh salad or enjoy it on its own as a protein-packed meal.
Total Time: 45 minutes
Prep Time: 10 minutes
Cook Time: 35 minutes
Servings: 4–6
Ingredients
Sliced mushrooms: 1 cup
Shredded Swiss cheese: ¾ cup
Green onions: ½ cup, chopped
Eggs: 4
Milk: 1 cup
Butter: 1 tbsp (for sautéing)
Thyme: ½ tsp
Salt & pepper: To taste
Instructions
Preheat your oven to 375°F (190°C). Grease a pie dish or small baking dish.
Melt the butter in a pan and sauté the mushrooms for 4–5 minutes until they soften and release moisture.
Add the chopped green onions and cook for another minute.
Season the vegetables with salt, pepper, and thyme. Remove from heat.
Spread the mushroom and onion mixture evenly in the greased pie dish.
Sprinkle the shredded Swiss cheese over the vegetables.
In a bowl, whisk the eggs and milk until smooth. Add a small pinch of salt and pepper.
Pour the egg mixture over the cheese and vegetables.
Bake for 30–35 minutes, or until the center is set and the top is lightly golden.
Let it rest for 5 minutes before slicing.
Tips
Don’t skip sautéing the mushrooms. Removing the moisture keeps the quiche from becoming watery.
Use whole milk for the best texture. Low-fat milk works but won’t be as creamy.
If the top browns too quickly, cover loosely with foil during the last minutes of baking.
Make sure the pie dish is well-greased to prevent sticking.
Let the quiche cool slightly before cutting so the slices hold together.
Fresh thyme works well, but dried thyme is completely fine.
If the mixture seems too liquid after baking, give it a few extra minutes.
Spread ingredients evenly so each slice tastes balanced.
Use room-temperature eggs for smoother mixing.
For meal prep, cool completely before storing in the fridge.
Variations
Add spinach for extra greens.
Swap Swiss for feta or mozzarella.
Use a mix of mushrooms for deeper flavor.
Add roasted red peppers for color and sweetness.
Replace green onions with caramelized onions for a richer taste.
Mix in diced tomatoes (well drained).
Add cooked chicken for extra protein.
Use a splash of cream instead of milk for a more indulgent version.
Add olives for a Mediterranean twist.
Season with oregano or basil instead of thyme.
Q&A
Can I use non-dairy milk?
Yes, as long as it’s unsweetened. Almond or oat milk works.
Can I use a different cheese?
Yes. Mozzarella, cheddar, or feta are all great options.
Why is my quiche watery?
The mushrooms may not have released enough moisture while cooking.
Can I make this ahead of time?
Yes. Bake it, cool it, and reheat slices as needed.
How long does it keep in the fridge?
About 3–4 days stored in an airtight container.
Can I freeze crustless quiche?
Yes. Freeze in slices and reheat in the oven.
Can I add meat?
Cooked sausage, chicken, or turkey work well.
Do I need to whisk the eggs a long time?
Just until smooth and combined.
How do I know it’s done?
The center should be set and not jiggle when you shake the dish.
Can I double the recipe?
Yes. Use a larger baking dish and add extra baking time.
Nutrition
(per serving, approx.)
Calories: 180–220
Protein: 12–14 g
Carbs: 5–6 g
Fat: 13–15 g
Fiber: 1 g
Sodium: Varies based on cheese and seasoning
Conclusion
This crustless quiche is simple, flavorful, and flexible enough to fit any meal. The combination of mushrooms, Swiss cheese, and green onions gives it a balanced savory taste without feeling heavy. It slices cleanly, reheats well, and can be customized with different herbs, vegetables, and proteins. Whether you’re making a quick brunch or prepping meals for the week, this recipe is a dependable option that always turns out well. Enjoy it warm and fresh out of the oven.