Crustless Mushroom Quiche
Crustless Mushroom Quiche is a delightful dish that brings together the rich flavors of sautéed mushrooms and the creamy goodness of eggs, all without the fuss of a traditional crust. This recipe is perfect for brunch or even a light dinner. It’s packed with protein, making it both satisfying and nutritious. The combination of Swiss cheese, ground beef, and fresh greens gives this quiche a unique twist that is sure to impress your family and friends. Whether you’re looking for a quick meal or an elegant dish for entertaining, this Crustless Mushroom Quiche will be a hit.
Why It’s Crowd-Pleasing

Everyone loves a good quiche, and this crustless version is no exception. It’s incredibly versatile, allowing you to customize the ingredients based on what you have on hand. The creamy texture, combined with the umami of mushrooms and the savory ground beef, makes it a savory delight that appeals to both adults and kids alike. Plus, without a crust, it’s a bit lighter and easier to prepare—perfect for those busy mornings or when you want a satisfying meal without the extra carbs.
What You’ll Need
- 1 lb ground beef – This adds a hearty protein boost.
- 8 oz white mushrooms, sliced – Provides a delicious earthy flavor.
- 2 green onions, thinly sliced, greens only – For a fresh, mild onion taste.
- 1 cup Swiss cheese, shredded – Melts beautifully and adds creaminess.
- 1 handful of spinach, chopped – A nutritious addition that brightens the dish.
- 10 eggs – The base of the quiche; rich in protein.
- 1 1/2 cups heavy cream – Gives a rich, custardy texture.
- 1 cup whole milk – Balances the richness of the cream.
- 1/2 tsp sea salt – Enhances the flavors.
- Cracked pepper – For a touch of spice.
- 1/2 tsp crushed red pepper, optional – Adds a bit of heat if desired.
Gear Checklist
- Large skillet – For cooking the ground beef and mushrooms.
- Mixing bowls – To combine the egg mixture and other ingredients.
- Whisk – To beat the eggs and mix the cream.
- Baking dish – A 9×13 inch or similar size works best.
- Knife and cutting board – For slicing mushrooms and chopping greens.
The Method for Crustless Mushroom Quiche

Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). This ensures your quiche cooks evenly.
Step 2: Cook the Ground Beef
In a large skillet over medium heat, add the ground beef. Cook until browned, breaking it apart with a spatula. This should take about 5-7 minutes. Once cooked, drain any excess fat and set aside.
Step 3: Sauté the Mushrooms
In the same skillet, add the sliced mushrooms. Sauté for about 5 minutes until they are tender and have released their moisture. Season with a pinch of salt and pepper.
Step 4: Prepare the Egg Mixture
In a large mixing bowl, whisk together the eggs, heavy cream, whole milk, sea salt, and cracked pepper until well combined.
Step 5: Combine Ingredients
Add the cooked ground beef, sautéed mushrooms, chopped spinach, green onion greens, and shredded Swiss cheese to the egg mixture. Stir gently to combine all ingredients.
Step 6: Pour into Baking Dish
Grease your baking dish lightly with oil or cooking spray. Pour the mixture into the dish, spreading it evenly.
Step 7: Bake
Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the quiche is set in the center and lightly golden on top.
Step 8: Cool and Serve
Once done, remove from the oven and let it cool for about 10 minutes. This will help the quiche firm up for easier slicing. Serve warm or at room temperature.
Fit It to Your Goals

- Low-carb option: You can omit the ground beef or substitute it with a plant-based meat alternative.
- Vegetarian version: Skip the ground beef and add more vegetables like bell peppers or zucchini.
- Cheese alternatives: Use dairy-free cheese if you’re looking for a lactose-free option.
- Spice it up: Add more crushed red pepper or diced jalapeños for an extra kick.
Easy-to-Miss Gotchas
- Make sure to drain the excess fat from the ground beef to avoid a greasy quiche.
- Don’t overcook the mushrooms; they should be tender but not mushy.
- Let the quiche cool slightly before slicing to ensure clean cuts.
- Check for doneness by inserting a knife into the center; it should come out clean.
Keep-It-Fresh Plan
This Crustless Mushroom Quiche can be stored in the refrigerator for up to 4 days. To reheat, simply slice and warm in the microwave or oven. It also freezes well for up to 2 months. Just be sure to wrap it tightly to prevent freezer burn.
Your Top Questions
Can I make this quiche ahead of time?
Absolutely! You can prepare the quiche a day in advance and store it in the refrigerator. Just reheat it in the oven before serving for the best texture.
What can I serve with Crustless Mushroom Quiche?
This quiche pairs wonderfully with a fresh green salad, roasted vegetables, or even a side of fruit for a balanced meal.
Can I use different types of cheese?
Yes! Feel free to substitute Swiss cheese with cheddar, feta, or mozzarella based on your preference.
Is this recipe gluten-free?
Yes! Since this is a crustless quiche, it is naturally gluten-free, making it a great option for those with gluten sensitivities.
Cook This Next
- Vegetable Quiche – A colorful veggie-packed option.
- Spinach Feta Quiche – A classic favorite with a Mediterranean twist.
- Easy Broccoli Quiche – Perfect for a light brunch.
- Southern Biscuits – A great side to accompany your quiche.
Ready, Set, Cook
Now that you have everything you need to create this delicious Crustless Mushroom Quiche, it’s time to gather your ingredients and get cooking! This dish is not only simple to prepare but also allows for plenty of creativity in the kitchen. Whether you’re feeding a crowd or just looking for a nutritious meal, this recipe will serve you well. Enjoy the process, and savor every bite of your homemade quiche!

Crustless Mushroom Quiche
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C). This ensures your quiche cooks evenly.
- In a large skillet over medium heat, add the ground beef. Cook until browned, breaking it apart with a spatula. This should take about 5-7 minutes. Once cooked, drain any excess fat and set aside.
- In the same skillet, add the sliced mushrooms. Sauté for about 5 minutes until they are tender and have released their moisture. Season with a pinch of salt and pepper.
- In a large mixing bowl, whisk together the eggs, heavy cream, whole milk, sea salt, and cracked pepper until well combined.
- Add the cooked ground beef, sautéed mushrooms, chopped spinach, green onion greens, and shredded Swiss cheese to the egg mixture. Stir gently to combine all ingredients.
- Grease your baking dish lightly with oil or cooking spray. Pour the mixture into the dish, spreading it evenly.
- Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the quiche is set in the center and lightly golden on top.
- Once done, remove from the oven and let it cool for about 10 minutes. This will help the quiche firm up for easier slicing. Serve warm or at room temperature.
Notes
- Customize with your favorite vegetables for added nutrition.
- Store leftovers in the refrigerator for up to 4 days.
- This quiche freezes well for up to 2 months.
