If you're looking for a comforting, flavorful dish that brings together the delicate sweetness of leeks and the earthy richness of mushrooms, this Leek and Mushroom Quiche Recipe is an absolute must-try. Perfectly creamy with a flaky, buttery crust, this quiche effortlessly combines simple ingredients into a satisfying meal that’s just as lovely for brunch as it is for dinner. Whether you’re a seasoned home baker or just starting to explore savory pies, this recipe promises a deliciously rewarding experience that will quickly become a family favorite.

Ingredients You'll Need

The image shows a wooden cutting board on a white marbled surface, holding various ingredients for cooking. On the top left is a white bowl with blue patterns filled with different seasonings: salt, black pepper, and green herbs. Below it, a smaller white bowl with dark blue lines contains minced garlic. Next to it, a large bowl of white cream is placed on the left side. In the center is a pile of chopped light green leek pieces. Above the leek are several slices of fresh white mushrooms with brown gills. On the right, there are four whole brown eggs resting on the board. Lastly, a medium white bowl with a blue pattern on the edge holds finely grated pale yellow cheese. The composition is neat and arranged clearly for easy viewing. Photo taken with an iphone --ar 4:5 --v 7

The magic of this Leek and Mushroom Quiche Recipe lies in its straightforward, fresh ingredients. Each component plays a crucial role, from the crisp pastry base to the creamy egg custard, ensuring a perfect balance of texture and flavor in every bite.

200 gr Plain / All-Purpose Flour: The foundation for a flaky, tender quiche crust that holds everything beautifully.

¼ teaspoon Fine Table Salt: Enhances the dough’s flavor without overpowering it.
100 gr Unsalted Butter (very cold): Creates that coveted crumbly texture in the pastry.
65 ml Water (very cold): Binds the dough, ensuring it remains light and easy to roll out.

2 small Leeks: Adds a subtle sweetness and pleasant crunch when cooked.
½ tablespoon Olive Oil: For sautéing the leeks and garlic to tender perfection.
1 teaspoon Minced Garlic: Offers a gentle aromatic depth to the vegetable filling.

200 gr White Cup Mushrooms: Brings an earthy, meaty texture that pairs wonderfully with the leeks.
4 large Eggs: The rich custard base that holds the quiche filling together.
300 ml Thickened / Heavy Cream: Creates a smooth, silky quiche custard.

1 ½ teaspoon Fine Table Salt: Seasoning to taste for the filling.
½ teaspoon Pepper: Adds a gentle kick and balances the flavors.
1 teaspoon Dried Herb Mix: Infuses subtle herbal notes for extra depth.

40 gr Grated Cheddar Cheese: Melts within the filling, adding a delightful sharpness and richness.

How to Make Leek and Mushroom Quiche Recipe

Step 1: Prepare the Quiche Pastry

Start by combining the plain flour and salt in your food processor. Add the cold, cubed butter and pulse until the mixture fine crumbs. Gradually add the icy water to bring the dough together without overworking it. Form the dough into a disk, roll it between baking sheets, and chill it for at least an hour to relax the gluten and keep the crust tender.

Step 2: Line the Quiche Pan

Once chilled, bring the pastry to room temperature briefly so it's easier to handle. Place it into a 25 cm quiche pan, pressing gently to fit the base and sides perfectly. Trim away extra dough and dock the base with a fork to prevent bubbling. Chill the lined pan for a couple of hours or even overnight to maintain its shape while baking.

Step 3: Blind Bake the Pastry

Preheat your oven to 160°C (325°F). Cover the pastry with baking paper and fill it with pie weights or dry beans to keep it flat. Bake for 15 minutes, then remove the weights and paper, and bake for another 10 to 15 minutes until the crust is set and slightly golden. Let it cool while preparing the filling.

Step 4: Cook the Leeks and Mushrooms

Sauté minced garlic and chopped leeks in olive oil over medium heat until tender and translucent—this highlights their natural sweetness. Meanwhile, slice the mushrooms thinly to evenly layer later. These gently cooked vegetables form the delicious, earthy base for your quiche filling.

Step 5: Prepare the Custard Filling

Whisk eggs and thickened cream together with salt, pepper, and dried herbs until smooth. Stir in grated cheddar cheese to enrich the custard, reserving a bit for topping, which adds a lovely crust and extra flavor.

Step 6: Assemble and Bake

Layer the cooked leeks and mushrooms in the par-baked crust, alternating for an even distribution. Pour the egg and cream mixture over the veggies, then top with any reserved cheese and vegetables. Bake the quiche for 40 to 50 minutes until the filling is set and golden on top. Let it cool slightly before serving, as this allows the custard to firm up beautifully.

How to Serve Leek and Mushroom Quiche Recipe

A round savory pie with a golden, flaky crust that has scalloped edges sits on a round wooden board. The pie is sliced into six pieces, with three pieces slightly separated from the rest on a silver spatula. The filling has a creamy, light yellow base covered with browned melted cheese. Thick slices of dark brown mushrooms and small green leafy parsley pieces are evenly spread on top. There are also small bits of green and white vegetables mixed into the filling. The whole scene is set on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of fresh chopped chives or parsley adds a burst of color and brightness that contrasts delightfully with the rich quiche. Thinly shaved parmesan or a light drizzle of truffle oil can also elevate the flavors if you want to impress guests.

Side Dishes

This quiche pairs wonderfully with a crisp green salad dressed in a tangy vinaigrette to cut through its creaminess. Roasted cherry tomatoes or a refreshing cucumber salad bring freshness and balance to the plate.

Creative Ways to Present

Served warm or at room temperature, this quiche looks stunning on a rustic wooden board or a bright ceramic platter. Cut into generous wedges or bite-sized squares for parties. For a brunch twist, pair it with avocado toast and fresh fruit for a colorful spread.

Make Ahead and Storage

Storing Leftovers

Once cooled, wrap leftover quiche tightly in plastic wrap or store it in an airtight container in the fridge. It will keep well for 3 to 4 days, making it perfect for quick lunches or snacks throughout the week.

Freezing

You can freeze your Leek and Mushroom Quiche Recipe either before or after baking. Wrap it securely in foil and freezer-safe bags to prevent freezer burn. Frozen quiche is best enjoyed within 1 to 2 months for optimal freshness.

Reheating

Reheat slices gently in a preheated oven at 160°C (325°F) for about 10 to 15 minutes until warmed through, maintaining that flaky crust and creamy filling. Avoid microwaving to prevent sogginess and preserve texture.

FAQs

Can I use a store-bought pastry instead of making my own?

Absolutely! While homemade pastry brings a lovely freshness, quality store-bought pastry can save time and still produce fantastic results without compromising the delightful texture.

What type of mushrooms work best for this quiche?

White cup mushrooms are classic, but cremini, shiitake, or even porcini will add varying depths of flavor and texture, depending on your preference and what’s available.

Is it necessary to blind bake the crust?

Blind baking prevents a soggy crust by setting the dough before adding the filling. It’s especially important for wetter fillings like this creamy quiche to keep the base crisp and flaky.

Can I substitute the heavy cream with milk?

You can, but using milk will result in a less creamy, slightly lighter filling. For the richest texture and best results, heavy cream or a combination of cream and milk is preferable.

How do I know when the quiche is fully baked?

The filling should be set around the edges but still have a slight wobble in the center when you gently shake the pan. It will continue to set as it cools, ensuring a perfect custard texture.

Final Thoughts

There’s just something so comforting about a warm slice of this Leek and Mushroom Quiche Recipe, with its tender vegetables, rich custard, and buttery crust coming together in perfect harmony. Whether you’re sharing it with family or enjoying a solo treat, this quiche has a way of making every meal feel special. I can’t wait for you to try it and discover just how wonderfully simple ingredients can create something truly delicious.

Leek and Mushroom Quiche Recipe

Ingredients You'll Need