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Homepage » Pies & Tarts » Mushroom Leek Quiche

Published: Dec 13, 2019 · Modified: Sep 10, 2020 by Paula Montenegro · We generate income from ads and affiliate links · 40 Comments

Mushroom Leek Quiche

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Mushroom quiche squares pin with text
Mushroom quiche squares long pin with text
Mushroom quiche squares pin with text
Mushroom quiche squares pin with text

Quiche is a fancy tart, with a buttery crust and a rich creamy filling. Mushrooms and leeks make this recipe an extraordinary one, full of flavor and a wonderful dish to have frozen at all times!

Table of Contents show
What is quiche?
The crust.
The binding cream.
The add-ins.
How to cook the vegetables.
Mushroom Leek Quiche
Ingredients
Hands holding square mushroom quiche still in metal pan

Originally published in 2012, it has been updated with images, text, and recipe to serve you better.

I'm very used to making quiche, or thin tarts, and this mushroom leek version is one of my favorites. Who doesn't like mushrooms and homemade pastry, right?

I added leeks to the mix.

Why? Because they really go perfect together. Flavors that pair well, these are two that get the job done.

The thing about quiche is pretty much like frittata or risotto: it's the perfect way to clean your fridge of odds and ends. Vegetables and cheeses, deli meats, anything and everything can go into a quiche.

Mushroom quiche squares over a  light colored cloth

What is quiche?

Quiche is a French word for tart, which is different from a pie in it's height mostly.

It has 3 main components: crust, binding cream, and add-ins.

The crust.

An all-butter quiche pastry is best and homemade is highly recommended. The French pate sablée is the most common one.

My go-to quiche dough has only four ingredients, flour, salt, butter, and ice water (image below). 

I know it as Shortcrust Pastry (or Pie Crust) and there's a whole post devoted to it.

Hands lining dark metal pie pan with pie crust

The binding cream.

This is essentially the glue that makes it all come together.

Traditional recipes for this part have lots of cream and many times include grated cheese.

Cream in a glass bowl, eggs, yogurt, salt and pepper on white marble surface

I have streamlined it and now have the best recipe which involves natural yogurt. Only 5 ingredients including salt and pepper (image above).

And no cheese. I use it in the add-ins if it's part of the filling - which in this mushroom leek quiche is not.

The binding cream is added after the add-ins (image below).

Pouring of binding cream over mushroom quiche filling

The add-ins.

The filling is simple and I never follow quantities. But for the sake of this recipe, I did, of course.

I use mushrooms and leeks because they are awesome together. But you can use green onions or shallots and the results will also be great.

Raw and baked mushrooms and leeks, image collage

How to cook the vegetables.

In the oven: my favorite way and how I cooked them for this recipe (image above). Drizzled with some olive oil in a baking pan until they are softened but still crunchy. This is important because they will continue cooking in the oven once the quiche is assembled.

On the stove: I just melt butter and some olive oil, and throw in coarsely chopped leeks, add salt and pepper, cook for a minute or so, then add chopped mushrooms, turn on the heat to high and it's done when the mushrooms are brown and no liquid remains.

Hand lifting a piece of mushroom quiche

It is very important not to use watery ingredients when making quiche, as the result will be soggy. And soggy is no good. Nobody likes a soggy tart.

Quiche is the perfect thing for a lunch together with a salad, for a picnic, for a buffet table and, if you make them bite-size, it's the ultimate appetizer to eat while you mingle holding a cocktail in your other hand.

So this is one of my favorite foods for New Year's eve parties. Because it is amazing at room temperature as finger food!

Mushroom quiche squares placed on top of a light colored cloth

Other recipes you might like:

Wild Mushroom Risotto
Mushroom Cheese Strudel
Creamy Mushroom and Eggs Brioche
Baked Ricotta with Roasted Tomatoes and Onions
Semolina Bread
Corn Basil Empanadas

Let me know if you make this recipe! I’d love to hear what you think about it.
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Continue to Content
Yield: 8-10 servings

Mushroom Leek Quiche

Mushroom quiche squares on light colored cloth

Quiche is a fancy tart, with a buttery crust and a rich creamy filling. Mushrooms and leeks make this recipe an extraordinary one, full of flavor and a wonderful dish to have frozen at all times!

The filling in this recipe is for a 9-inch square or round pan with removable bottom. But you might have leftover pie crust.

Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes

Ingredients

  • This recipe is for 9-inch square or round pan with removable bottom
  • Shortcrust Pastry (or Pie Crust) . Or use a commercial pie crust, all-butter is better.

For the filling:

  • 14oz (400g) portobello mushrooms, sliced
  • 2 large leeks, white and light green parts only (about 2 cups sliced)
  • Salt and black pepper

For the binding cream:

  • ¾ cup (190g) natural yogurt (or Greek)
  • ¾ cup (190g) whipping cream 
  • 3 eggs, room t°
  • Salt and pepper, to taste

Instructions

For the crust:

  1. Make shortcrust pastry according to the recipe in the post linked above.
  2. Blind bake (pre-baking) according to instructions in the link above, and reserve. Leave the oven on.

For the filling:

  1. Preheat the oven to 350°F /180°C.
  2. Wash, dry, and thinly slice leeks. Clean and slice whole mushrooms.
  3. Put them in a lightly oiled baking pan and bake for about 15 minutes, until beginning to soften. You do not want to completely bake them at this point.
  4. Raw and baked mushrooms and leeks collage

For the binding cream:

  1. In a large bowl mix cream and yogurt until combined with a wire whisk or spoon. No need to use an electric mixer.
  2. Add eggs and mix until well combined but without beating. We don't want to beat the eggs much, only combine them well.
  3. Add salt and pepper and mix. I suggest you taste it and adjust seasonings. It should be somewhat salty. Remember the mushrooms and leeks are cooked without salt.

To assemble the quiche:

  1. It's best to fill the quiche dough near the oven.
  2. Scatter the mushrooms and leeks at the bottom.
  3. Slowly add the cream covering the whole surface. Don't overflow the walls of the quiche, but they will fill completely.
  4. Bake for 35-40 minutes, until puffed and golden.
  5. Let cool on a wire rack for a few minutes and eat.
  6. Or eat at room temperature.

Notes

Make-ahead:

Let cool completely on a wire rack after taking the quiche out of the oven. Wrap in plastic and refrigerate for 2-3 days. Or freeze, well wrapped, for a month.

Serving:

Choose to serve it hot, straight from the oven or at room t° as finger food. It travels well for picnics and is amazing as part of a brunch table.

© Paula Montenegro
Cuisine: International / Category: Pies & Tarts

Paula Montenegro

I'm Paula, a baker for more than 30 years and your designated recipe finder, sharing the best ones on this blog, with simple ingredients + easy-to-follow instructions.
Previous Post: « Fudgy Brownie Cookies
Next Post: Cardamom Bundt Cake »

Reader Interactions

Comments

  1. Christine Horwood says

    May 04, 2020 at 2:31 am

    Hello, what size dish do you use for the Mushroom & Leek Quiche?

    Reply
    • Paula Montenegro says

      May 04, 2020 at 10:02 am

      Hi Christine, it's a 9-inch square or round pan with removable bottom.

      Reply
  2. Jennifer Banz says

    December 23, 2019 at 11:36 am

    The was so delicious! I made it for Sunday brunch and everyone loved it!

    Reply
  3. SHANIKA says

    December 23, 2019 at 10:46 am

    I love making Quiche! It's such the perfect Holiday breakfast meal! I'm loving the combo of leeks and mushrooms! Such bold flavor!

    Reply
  4. Jenni says

    December 23, 2019 at 3:26 am

    This Mushroom Leek Quiche looks so delicious and perfect for a crowd. This will be gorgeous for a Christmas brunch spread or any other special occasion brunch!

    Reply
  5. Jacque says

    December 22, 2019 at 4:22 pm

    This might be my new favorite quiche! I love the flavor of the mushrooms and shallots!

    Reply
  6. Jamie says

    December 21, 2019 at 4:20 am

    Wow this looks incredible! I love savory breakfasts more than sweet so this is my kind of meal! This would be great to make on Christmas morning!

    Reply
  7. Denise says

    December 20, 2019 at 10:46 pm

    What a gorgeous quiche! I love the flavors, I am sure it tastes as delicious as it looks.

    Reply
  8. Shelley says

    December 20, 2019 at 10:48 am

    Haha - loved the comment that quiche is a great way to clean out the fridge - so true! 🙂 This sounds absolutely delicious, and your photos are lovely ... but what REALLY reeled me in were the shots of the inside of this quiche, with those tantalizing mushrooms peeking out! Wonderful!

    Reply
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