Breakfast & Brunch
A cheese-free quiche doesn’t mean sacrificing flavor—this mushroom and spinach crustless delight proves it. The secret lies in a savory egg base enriched with sautéed mushrooms, wilted spinach, and aromatic herbs, all bound together without dairy.
I developed this recipe after realizing many quiches rely too heavily on cheese, and this version delivers the same satisfying texture and depth through careful technique and ingredient selection.
What makes this quiche work is the crustless foundation—a mix of eggs and milk that creates a tender, golden base when baked. The mushrooms add an earthy richness, while spinach provides freshness and color.
A touch of Dijon mustard and fresh herbs elevates the flavors, ensuring every bite is packed with complexity. The result is a dish that’s both hearty and light, perfect for breakfast or brunch without the heaviness.
By the time it emerges from the oven, you’ll have a quiche with a golden, slightly crispy top and a creamy, flavorful interior—no cheese required.
The mushrooms release their umami depth during baking, while the spinach maintains its vibrant green hue, making this dish as visually appealing as it is delicious. This recipe is ideal for those avoiding dairy or simply looking for a lighter take on a classic.
The beauty of this quiche is its versatility—it works equally well for a quick weekday breakfast or a weekend brunch spread. Serve it warm with a side salad or crusty bread to soak up every last bite. Here’s how to make it, step by step.
Ingredients for quiche recipe no cheese
Six simple ingredients create a rich, dairy-free quiche with earthy mushrooms and vibrant spinach.
| Ingredient | Amount | Notes |
|---|---|---|
| Large Eggs 🥚 | 6 whole | Room temperature preferred |
| Whole Milk 🥛 | 1 ½ cups | Full-fat for creaminess |
| Shiitake Mushrooms 🍄 | 8 oz | Sliced thin, stems removed |
| Baby Spinach 🌿 | 5 oz | Fresh, not wilted |
| Shallots 🧅 | 2 whole | Minced finely |
| Garlic Cloves 🧄 | 3 cloves | Peeled, minced |
| Dijon Mustard 🍯 | 1 tbsp | High-quality brand |
| Fresh Thyme Leaves 🌿 | 1 tbsp | Chopped finely |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | For sautéing |
| Salt 🧂 | ¾ tsp | Kosher or sea salt |
| Ground Black Pepper 🌶️ | ½ tsp | Freshly ground |
| Nutritional Yeast 🍞 | 1 tbsp | For umami depth |
The mushrooms are the star here—shiitake has the best texture and umami, but cremini or white mushrooms work too. Whole Foods or Trader Joe's carry pre-sliced shiitake, which saves time. Look for stems removed and vibrant color—no slimy spots. The spinach should be baby variety (not pre-washed), and Costco sells it in bulk for great value. Fresh thyme is ideal, but dried works at one-third the amount if you're in a pinch. For the shallots, organic is best since they're eaten raw—they're sweeter and more flavorful.
No Dijon mustard? Yellow mustard at half the amount works, but you'll lose some depth. The nutritional yeast is key for that cheesy flavor without dairy—Bob's Red Mill is a reliable brand. Swap shiitake for cremini if needed, but they won't have the same earthy punch. The milk can be substituted with unsweetened almond milk for a lighter version, though the texture will be slightly different. If your spinach is wilted, give it a quick spin in a salad spinner to remove excess moisture before adding to the quiche—no one wants a soggy quiche.
This quiche reheats beautifully—just pop slices in a 350°F oven for 5-7 minutes until warmed through. Store leftovers in an airtight container in the fridge for 4 days, or freeze portions for 3 months. I like to portion it into single servings before freezing for easy breakfasts. The flavor actually improves the next day as the mushrooms mellow and the spinach softens—perfect for meal prep. For a crispier top, broil for 2-3 minutes at the end of baking.
Why You'll Love This Recipe
- No-Fuss Assembly: I swear by this one—just chop the shallots and mushrooms, scatter the spinach, pour the egg-milk mix, and bake. No measuring cups, no fancy techniques, just done. My lazy Sundays thank me every time.
- Umami Magic: Between the earthy shiitakes and the sweetness of caramelized shallots, this quiche packs a punch without cheese. Honestly, the way the spinach wilts into that creamy egg custard? It’s the kind of flavor that makes you forget you didn’t use dairy.
- Office Lunch Hero: This cuts into neat squares, reheats like a dream, and keeps for days in the fridge. Pack it in a container, grab a fork, and you’ve got a lunch that’ll impress coworkers—or at least make your break room jealous.
- Budget-Friendly Luxury: Eggs, mushrooms, and spinach? Affordable staples that still feel special. I’ll be real: it costs half of what a cheese quiche would, but tastes like you splurged. (Between us, my wallet approves.)
Step-by-step instructions for mushroom and spinach crustless quiche
This method delivers a rich, flavorful quiche without cheese, using mushrooms and spinach for depth.
Sauté Aromatics and Vegetables
Heat the 2 tablespoons extra-virgin olive oil in a 10-inch oven-safe skillet over medium heat. Add the 2 minced shallots and cook for 2 minutes until softened and translucent. Add the 8 ounces sliced shiitake mushrooms and cook for 5-6 minutes until they release their moisture and begin to brown.
Stir in the 3 minced garlic cloves and cook for 30 seconds until fragrant. Add the 5 ounces baby spinach and cook for 1-2 minutes until just wilted. Remove the skillet from heat and let the vegetables cool slightly. This step builds the flavor foundation for your quiche.
Prepare the Egg Mixture
In a large bowl, whisk together the 6 whole large eggs until the yolks and whites are fully combined. Add the 1.5 cups whole milk, 1 tablespoon Dijon mustard, 1 tablespoon fresh thyme leaves, 1 tablespoon nutritional yeast, 0.75 teaspoon salt, and 0.5 teaspoon ground black pepper. Whisk until the mixture is smooth and well incorporated.
This mixture should be uniform in color and consistency, with no visible streaks of egg white. The nutritional yeast adds a savory depth that replaces the cheesy flavor typically found in quiches. Let the mixture sit for 5 minutes while you prepare the skillet.
Assemble and Bake the Quiche
Return the skillet with sautéed vegetables to the stove over low heat. Pour the egg mixture evenly over the vegetables, using a spatula to spread it into an even layer. The mixture should cover the vegetables completely. Place the skillet on the middle rack of a preheated 350°F oven.
Bake for 35-40 minutes until the top is set and the edges are golden brown. The center should still be slightly jiggly—this indicates it's fully cooked but still moist. If the top browns too quickly, tent it loosely with aluminum foil to prevent over-browning.
Rest and Serve
Remove the quiche from the oven and let it rest in the skillet for 10 minutes. This resting period allows the custard to set properly and makes it easier to slice. Use a sharp knife to cut into 6 equal wedges, serving directly from the skillet for a rustic presentation.
The quiche should have a silky texture with a firm yet tender bite. Serve warm or at room temperature, accompanied by a simple arugula salad or crusty bread. The flavors of mushrooms, spinach, and thyme will shine through, creating a satisfying, cheese-free dish.
Pro Tips For Making Quiche Recipe No Cheese
- SAUTE MUSHROOMS UNTIL DRY: I learned this the hard way—wet mushrooms make the filling soggy. Cook shiitakes on medium-high until all moisture evaporates (about 8-10 minutes), then push them to one side of the pan and crisp the shallots in the same oil. That caramelized flavor carries the dish when there’s no cheese to tie it together.
- WHISK EGGS COLD: Warm milk thins the eggs too much, and your quiche will end up more custard than firm. Whisk eggs and milk together in a cold bowl—no preheating the milk. The texture stays rich but stable, especially when baking at 375°F (190°C). (Yes, even if you’re impatient like me.)
- LAYER SPINACH LAST: Spinach wilts fast, and if you mix it into the filling too early, it turns into a sad, watery sludge. Add baby spinach in the final 5 minutes of baking—just scatter it on top after the mushrooms and shallots. The residual heat wilts it perfectly without killing the flavor.
- USE A WATER BATH: This isn’t a custard pie, but the egg-milk ratio still needs insurance. Place your quiche dish in a roasting pan with 1 inch of hot water halfway through baking. The steam keeps the center creamy without risking a rubbery texture. (Your future self will thank you.)
Essential equipment for perfect results
Oven-Safe Skillet
An oven-safe skillet is your best friend for this recipe—I use a 10-inch cast-iron skillet from Lodge because it distributes heat evenly and retains it well. Cast iron is ideal for baking quiches as it prevents hot spots and ensures a golden, crispy top.
If you don’t have cast iron, a ceramic-coated skillet or stainless steel works too, but avoid non-stick—it can’t handle the high heat needed for a perfect crust. 🔥
Whisk and Mixing Bowl
A balloon whisk is essential for combining the eggs and milk smoothly without creating lumps. I recommend a stainless steel whisk like the OXO Good Grips—it’s durable and reaches every corner of your bowl.
For mixing, use a large mixing bowl (at least 8 cups) to accommodate the egg mixture comfortably. A glass bowl works best for whisking, as it lets you check the consistency easily.
Fine-Mesh Strainer
A fine-mesh strainer is handy if your spinach has any stubborn stems or tough bits. I keep a stainless steel strainer from OXO in my kitchen for this purpose—it’s gentle on greens and easy to clean.
If you skip this step, just tear the spinach into smaller pieces before adding it to the skillet. The strainer ensures your quiche filling stays silky smooth. 🌿
Digital Thermometer
While not strictly necessary, a digital kitchen thermometer (like the Thermoworks Thermapen) helps ensure your quiche reaches the perfect internal temperature of 160°F at the center. This prevents undercooking or overbaking.
If you don’t have one, use the toothpick test: Insert a clean toothpick into the center—if it comes out clean, it’s done. 🌡️
Aluminum Foil
Keep a roll of heavy-duty aluminum foil handy for tenting the quiche if the top browns too quickly. I use Reynolds Wrap because it’s sturdy and easy to tear. Tenting the quiche with foil for the last 5-10 minutes of baking prevents over-browning while keeping the custard creamy.
It’s a simple trick that saves the day when the oven runs hot. 🛡️
Nutrition facts
Frequently asked questions
Can I make this quiche without a crust?
This recipe is designed to be crustless, but if you prefer a crust, use a pre-baked pie crust or a store-bought puff pastry. Simply press it into your skillet before adding the egg mixture. For a gluten-free option, try a nut-based crust or a pre-made gluten-free pie shell.
What can I substitute for mushrooms?
If you don’t have shiitake mushrooms, try cremini or white mushrooms for a milder flavor. For extra richness, add sautéed onions or leeks. You can also use diced bell peppers, zucchini, or even roasted eggplant for a different texture.
How do I keep the quiche from getting rubbery?
Overbaking is the main cause of rubbery quiche. Remove it from the oven when the center is just set (a slight jiggle is normal). Let it rest for 10 minutes before slicing—this helps the texture firm up. Also, avoid opening the oven door frequently while baking.
Can I make this quiche ahead of time?
Yes! This quiche actually tastes better the next day. Store leftovers in an airtight container in the fridge for up to 4 days. Reheat slices in a 350°F oven for 5-7 minutes or microwave for 30 seconds until warm. Freeze portions for up to 3 months for easy breakfasts.
What’s the secret to a creamy texture without cheese?
The key is using whole milk and letting the egg mixture sit for 5 minutes before baking. The nutritional yeast adds umami depth, while Dijon mustard enhances flavor. Whisking thoroughly and avoiding lumps also ensures a silky finish.