Crustless Mushroom Quiche is an incredibly versatile and comforting dish that combines the rich flavors of sautéed mushrooms and shallots with creamy Gruyere cheese, eggs, and a touch of Dijon mustard. This delightful quiche is not only easy to prepare but also offers a great way to showcase the earthy aroma of fresh mushrooms, making it a perfect meal for any occasion. Whether you’re serving it for breakfast, brunch, or a light dinner, this recipe is sure to become a cherished favorite in your home. Join me in this step-by-step guide to crafting your own Crustless Mushroom Quiche, and bring a sense of warmth and nostalgia to your table.
Ingredients
To create your Crustless Mushroom Quiche, gather the following ingredients that are sure to tantalize your taste buds:
- 2 Tbsp. unsalted butter: This indulgent ingredient will lend a rich, velvety flavor to your dish.
- 8 oz. white button mushrooms, sliced: These juicy, flavorful mushrooms provide an earthy base that pairs beautifully with eggs.
- 3 shallots, finely chopped: Shallots impart a delicate sweetness and a mild onion flavor, enhancing the overall taste.
- 1 1/2 cups Gruyere cheese, shredded: This creamy and nutty cheese melts beautifully, creating a luscious texture.
- 1 cup heavy cream: Rich and silky, heavy cream will add depth and smoothness to the quiche.
- 1/2 cup whole milk: Milk helps to balance the richness of the cream while adding moisture.
- 4 large eggs, lightly beaten: Eggs are the binding agent that brings this dish together, offering structure and lightness.
- 1 Tbsp. Dijon mustard: A touch of tangy mustard elevates the flavor profile, making it extra special.
- 1 1/2 Tbsp. fresh chives, chopped: The vibrant, onion-like taste of chives brings a fresh pop of flavor.
- 1/2 tsp. kosher salt: Essential for enhancing the natural flavors of your ingredients.
- 1/2 tsp. black pepper: A hint of pepper adds warmth and mild spice.
- 2 Tbsp. grated Parmesan cheese, divided: This will sprinkle an extra layer of umami richness to your quiche.
Step-by-Step Directions
To get started, preheat your oven to 350 degrees Fahrenheit. While it warms up, spray a deep-dish pie plate or an oval baking dish with nonstick cooking spray, setting the stage for our delightful quiche.
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Sauté the Vegetables: In a large skillet over medium-high heat, melt the butter. Once melted, add in the sliced mushrooms and finely chopped shallots. Cook them until they turn a lovely golden brown, allowing the aromatics to fill your kitchen.
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Layer the Filling: Next, sprinkle the shredded Gruyere cheese and the browned mushrooms into the bottom of your prepared dish. The cheese will provide a creamy foundation that perfectly complements the mushrooms.
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Prepare the Custard Mixture: In a medium bowl, whisk together the heavy cream, whole milk, lightly beaten eggs, Dijon mustard, chopped chives, kosher salt, black pepper, and one tablespoon of the Parmesan cheese. Whisking well ensures that all the flavors meld together beautifully.
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Combine and Bake: Pour the custard mixture over the cheese and mushroom layer in your baking dish. To finish, sprinkle the remaining tablespoon of grated Parmesan cheese on top. Bake your quiche in the preheated oven for about 30-35 minutes, or until the top is a light golden brown and the center has set.
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Cool and Serve: Once baked, remove the quiche from the oven and allow it to cool for 5-10 minutes. This waiting time helps the flavors meld, making for an even tastier experience. Cut into wedges and serve warm on your favorite plates.
Tips & Tricks
To take your Crustless Mushroom Quiche to the next level, consider incorporating a mix of different mushrooms for added texture and flavor, such as shiitake or cremini mushrooms. Additionally, feel free to experiment with other cheeses like feta or goat cheese for a unique twist. If you’re looking to add some greens, spinach or kale can be a delightful addition, lending both nutrition and vibrant color.
Serving Suggestions & Pairings
This Crustless Mushroom Quiche shines on its own but can be paired elegantly with a simple side salad of mixed greens drizzled with a light vinaigrette. Additionally, serving it alongside fresh fruit or breakfast potatoes creates a well-rounded meal. Perfect for brunch gatherings, luncheons, or even cozy family dinners, this dish adapts seamlessly to any occasion.
Nutritional Information
Per serving (1/8 of the quiche):
- Calories: Approximately 320
- Protein: 16g
- Fat: 25g
- Carbohydrates: 5g
- Fiber: 1g
Enjoying this Crustless Mushroom Quiche can be part of a balanced diet when paired with lighter sides and fresh vegetables, ensuring you savor the flavors without overindulging.
Storing Tips & Variations
For any leftovers, store the quiche in an airtight container in the refrigerator for up to three days. It can also be frozen for longer storage, wrapped tightly in plastic wrap and aluminum foil, for up to two months. When ready to enjoy, thaw overnight in the refrigerator and reheat in the oven for the best results. Variations include using different vegetables, such as bell peppers or zucchini, to customize the quiche to your preference.
Conclusion
Crustless Mushroom Quiche is a hearty, flavorful dish that is not only simple to make but also incredibly rewarding. With its creamy texture and rich flavors, this quiche is sure to impress family and friends. I encourage you to give this recipe a try and share your experience with those you love; it may just become a beloved staple in your kitchen!
FAQs
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Can I use other types of cheese?
Yes! Feel free to experiment with cheeses like cheddar, mozzarella, or even feta, keeping in mind that the flavor will change with each type. -
Can I add meat to this quiche?
Absolutely! Cooked bacon, ham, or leftover chicken would be fantastic additions for those who enjoy meat. -
Is this quiche gluten-free?
Yes, since it is crustless, this recipe is naturally gluten-free, making it suitable for those with gluten sensitivities. -
How long can I keep leftovers?
Leftover quiche can be stored in the fridge for up to three days, or frozen for up to two months. -
Can I make this recipe ahead of time?
Yes! You can prepare the quiche a day in advance, storing it in the refrigerator before baking it the next day. Just remember to adjust the baking time if it’s coming straight from the fridge.

Crustless Mushroom Quiche
Ingredients
Method
- Preheat your oven to 350°F.
- Spray a deep-dish pie plate or oval baking dish with nonstick cooking spray.
- In a large skillet over medium-high heat, melt the butter.
- Add the sliced mushrooms and chopped shallots, cooking until golden brown.
- Sprinkle the shredded Gruyere cheese and cooked mushrooms into the bottom of the prepared dish.
- In a medium bowl, whisk together the heavy cream, whole milk, eggs, Dijon mustard, chives, salt, pepper, and 1 Tbsp. of the Parmesan cheese.
- Pour the custard mixture over the cheese and mushroom layer in the baking dish.
- Sprinkle the remaining Parmesan cheese on top.
- Bake for 30-35 minutes, or until the top is light golden brown and the center has set.
- Remove the quiche from the oven and allow it to cool for 5-10 minutes before slicing.
- Cut into wedges and serve warm.






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