The Ultimate Quiche Guide – Dough, Filling & Mushroom Onion Quiche

Master Quiche at Home

onion quiche

If you’ve ever wanted to master a classic French dish at home, this quiche recipe is exactly what you need. It brings together a perfectly buttery crust, a rich and creamy filling, and a flavorful mushroom and onion topping.

Not only is this recipe simple to follow, but it also teaches you the fundamentals of making quiche from scratch. As a result, you’ll be able to recreate endless variations with confidence.


What Makes This Recipe Special

This recipe is more than just a dish. It’s a complete guide.

First, you learn how to prepare a perfect quiche dough that is crisp yet tender. Then, you move on to the basic quiche filling, which is the heart of any great quiche. Finally, you assemble everything into a delicious mushroom and onion quiche.

Because of this structure, you are not just cooking — you are learning a technique.


Quiche Dough – The Foundation of Success

A good quiche always starts with a great dough.

The key here is balance. The dough must be:

  • Buttery but not greasy
  • Firm enough to hold the filling
  • Light and flaky after baking

To achieve this, always use room temperature butter and avoid overmixing. In addition, chilling the dough slightly before shaping helps maintain structure.


The Basic Quiche Filling

The filling is what gives quiche its signature creamy texture.

This mixture of cream, eggs, and cheese creates a smooth custard that sets perfectly when baked. However, the real secret is balance. Too many eggs will make it dense, while too much cream can make it too soft.

Therefore, sticking to a tested ratio ensures a silky and rich result every time.


Mushroom and Onion – The Flavor Boost

Now comes the part that brings everything together.

Mushrooms add depth and umami, while caramelized onions bring natural sweetness. When combined, they create a perfectly balanced flavor profile.

For best results:

  • Cook mushrooms until their moisture evaporates
  • Caramelize onions slowly for maximum flavor
  • Season lightly to enhance, not overpower

Because of this step, your quiche goes from simple to restaurant-quality.


How to Assemble the Perfect Quiche

Once all elements are ready, assembly becomes very simple.

First, line your mold with the dough. Then, add the mushroom and onion mixture. After that, pour the creamy filling on top. Finally, bake until golden and set.

As it bakes, the filling rises slightly and develops a beautiful golden color, while the crust stays crisp.


Close-up of a mini mushroom quiche with a golden crust, creamy filling, and sautéed mushrooms on top, placed on a wooden board.

Mushroom Quiche & Onion Quiche

A delicious mini mushroom quiche made with a buttery homemade crust, filled with a rich and creamy cheese custard and topped with sautéed mushrooms. Perfect for appetizers, brunch, or a quick savory bite, this recipe delivers a golden, flaky texture with a smooth and flavorful filling.
Prep Time 30 minutes
Cook Time 33 minutes
Cooling Time 10 minutes
Total Time 1 hour 15 minutes
Servings: 1
Calories: 330

Ingredients
  

Quiche Dough
  • 2 ¾ cups all-purpose flour
  • ¾ cup butter room temperature
  • 1 egg
  • ¾ teaspoon salt
  • ¼ cup cold water
Custard Base
  • 1 ½ cups fresh cream heavy cream
  • 2 eggs
  • ½ cup grated parmesan cheese
  • ½ cup grated emmental cheese
  • ¾ teaspoon salt
  • ¼ teaspoon white pepper
  • Pinch of nutmeg
Mushroom Quiche
  • 1 quiche tart
  • 1 tbsp caramelized onions see recipe on our page
  • 1/2 cup cooked mushrooms
  • 3 tbsp basic quiche filling
Onion Quiche
  • 1 quiche tart
  • 3 tbsp basic quiche filling
  • 2 tbsp caramelized onions

Equipment

  • Mini tart molds
  • Melted butter (for greasing)
  • Plastic wrap / nylon sheets (for rolling)
  • Parchment paper
  • Dried chickpeas (or pie weights) for blind baking

Method
 

Step 1: Make the Dough
  1. In a mixing bowl, combine the flour, salt, and sugar.
  2. Add the softened butter. Using your fingers, rub the butter into the flour until the mixture resembles coarse breadcrumbs. (Pro-tip: Do not let the mixture get too warm, or the butter will separate).
  3. Add the egg and lightly mix it into the dough.
  4. Gradually sprinkle in the ice-cold water, just enough until the dough comes together into a cohesive ball. Do not over-knead.
  5. Cover the dough and let it rest at room temperature for 10 minutes.
Step 2: Shape and Blind-Bake the Crusts
  1. Preheat your oven to 180°C (350°F).
  2. Lightly brush your tart molds with melted butter (or line them with parchment paper).
  3. Place the dough between two sheets of plastic wrap and roll it out to about ½ centimeter (¼ inch) thick.
  4. Gently place the rolled dough over the tart molds. Press the dough firmly into the bottom and sides. Press along the top edges with your hand to trim off any excess dough.
  5. Place the molded crusts briefly into the freezer to firm up.
  6. Remove from the freezer and prick the bottom of the dough a few times with a fork.
  7. First Bake: Line the inside of each crust with a small circle of parchment paper and fill with dried chickpeas (to weigh the dough down and prevent puffing). Bake at 180°C (350°F) for 8 minutes.
  8. Second Bake: Carefully remove the parchment paper and chickpeas. Lower the oven temperature to 170°C (340°F) and bake the empty crusts for another 8 minutes until lightly golden and sealed.
Step 3: Prepare the Fillings
  1. The Custard: In a bowl, add the crème fraîche (or heavy cream), white pepper, nutmeg, and salt. Crack in 2 eggs and whisk gently just to break them up and combine. Stir in the grated Parmesan and Emmental cheeses. Set aside.
  2. Sautéed Mushrooms: Heat a skillet over high heat. Add the olive oil and the smashed garlic cloves to flavor the oil. Let the garlic turn golden.
  3. Drop the mushrooms into the hot pan. Do not stir immediately. Let them sit until the bottoms get a nice seared color (this prevents them from releasing too much water). Toss them slightly, then season with dried thyme, black pepper, and a pinch of salt. Remove from heat and set aside.
Step 4: Assemble and Bake
  1. Keep the oven at 170°C (340°F).
  2. To make the Mushroom Quiche:
  3. Spread a very small amount of caramelized onions on the bottom of a baked tart shell.
  4. Add a layer of the sautéed mushrooms.
  5. Pour the custard and cheese mixture over the top until the shell is full.
  6. To make the Caramelized Onion Quiche:
  7. Add a generous, thick layer of caramelized onions to the bottom of a baked tart shell.
  8. Pour the custard and cheese mixture over the onions until full.
Step 5: Final Bake and Serving
  1. Place the assembled quiches into the oven at 170°C (340°F).
  2. Bake for 12 to 15 minutes (for the mushroom) and 15 to 20 minutes (for the onion), or until the custard is set and the tops are beautifully golden brown.
  3. Remove from the oven and allow them to cool before carefully removing them from the tart molds.
  4. Garnish the onion quiche with a tiny bit of extra caramelized onion on top.
  5. Slice in half and enjoy the perfect crumbly, savory, and sweet balance!

Video

Notes

Tips for the Best Results

To elevate your dish even further, keep these tips in mind:

  • Always pre-cook your fillings to avoid excess moisture exactly like we did with the mushrooms and onions.
  • Do not overfill the crust to prevent spilling
  • Let it rest before cutting for clean slices
  • Use high-quality cheese for better flavor

These small details make a big difference.


Variations You Can Try

Once you master this base recipe, you can easily adapt it.

For example:

  • Spinach and cheese
  • Chicken and mushroom
  • Zucchini and feta
  • Salmon and dill
  • Assorted Vegetables

Because the base is solid, your creativity becomes the only limit.


Storage and Reheating

Quiche stores very well, which makes it perfect for meal prep.

  • Refrigerate for up to 3 days
  • Reheat in the oven for best texture
  • Avoid microwaving if you want to keep the crust crisp

In addition, it can also be frozen for longer storage.


A Word from Chef François

chef holding a wooden cutting board with 2 mini quiches

A great quiche is all about respect for balance. Simple ingredients, when treated correctly, can create something truly exceptional.

Take your time with each step, and you will taste the difference.

If you’d like to explore more, make sure to check out the recipes on our website. There, you’ll find everything you need. Each recipe is explained clearly to help you achieve the best results at home, just like a professional kitchen.

You can also watch the full step-by-step recipes on my YouTube channel.


Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating