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Try this heavenly Caramelized Onion Quiche, for the perfect weekday meal or family brunch.
To make it, we start with an easy homemade pie crust (with only three ingredients) and top it with eggs, Parmesan, jammy onions, and creamy Greek yogurt for the ultimate comfort food.
Serve the savory tart for lunch or dinner all year-round with a crunchy green salad, whipped butter, and my no-knead focaccia. It’s the perfect meal when you’re entertaining, too. Prepare it in advance, and stick it in the oven when your guests arrive. You can even enjoy it chilled.
Caramelized Onion Quiche Ingredients
Please be sure to scroll down to the recipe card below for the complete details!
- Flour, butter, sea salt, maple syrup, cold water: Used for the pie crust. Make sure the butter is cold (salted or unsalted).
- Onions: I mix yellow and red onions.
- Butter: To caramelize the onions and bring out their sweet flavor.
- Heavy cream: Gives the golden onions a velvety, creamy texture.
- Greek yogurt: I use 10%, but any plain yogurt is fine.
- Eggs: Medium or large.
- Mozzarella and Parmesan: Combine for a nutty and cheesy consistency.
- Seasoning: Thyme, sea salt, and pepper balance all the savory ingredients.
How to Make a Caramelized Onion Quiche
- Prepare and bake the pie crust: Mix flour, butter, water, sea salt, and maple syrup. Roll it out and bake at 175°C / 347°F (fan).
- Caramelize the onions: Add butter to a large pan, then add the diced onions. Brown on medium-high heat for 5-10 minutes, then turn down the heat and caramelize slowly until golden. Add heavy cream on a burst of high heat and let the onion mixture cool.
- Make the pie filling: Mix eggs, yogurt, caramelized onions, cheese, and seasonings. Top with more cheese.
- Bake for 25-27 minutes until golden and baked through.
Possible Variations
- Onions: Use shallots or white onions. You can even add garlic.
- Greek yogurt: Swap it for crème fraîche, sour cream, or skyr.
- Add-ins: Mix in bacon, goat cheese, shredded chicken, gruyere, spinach, broccoli, cheddar, mushrooms, or cherry tomatoes.
- Pie crust: Use store-bought pie crust or puff pastry.
How to Store Leftovers
Slice any leftovers, and store it in the fridge in a large glass container.
FAQs
Add more water a little at a time until the dough comes together.
You can either make a smaller pie or several individual-sized ones. Alternatively, double the pie crust recipe and make an even larger pie.
More Easy Dinners
Caramelized Onion Quiche
Equipment
- pie dish 10 inch (25 cm)
Ingredients
Pie crust
- 175 grams plain flour
- 100 grams butter, cold, cubed
- 1 teaspoon sea salt
- 1 teaspoon maple syrup
- 2 tablespoons water, cold
Caramelized onion
- 7 onions, white and red
- 40 grams butter, salted
- 60 ml heavy cream
Filling
- 4 eggs
- 140 grams Greek yogurt
- 50 grams mozzarella, shredded
- 50 grams Parmesan
- 2 teaspoons sea salt
- pepper, to taste
- 1/2 teaspoon thyme
Instructions
Pie crust
- Preheat the oven to 175°C (347℉).
- Measure the flour into a large mixing bowl.
- Crumble the cubed butter into the flour.
- Add the salt, syrup, and water.
- Knead the dough into a smooth ball.
- Roll the dough out on a floured, clean surface into a 14-inch circle.
- Grease the pie dish with butter.
- Transfer the dough to the pie dish, flattening it against the bottom of the dish and up along the edges.
- Tuck in the dough along the edge of the dish so nothing hangs over.
- Use a fork to poke small holes into the bottom of the crust to prevent bubbling.
- Bake for 10 minutes and allow to cool.
- Trim along the edge of the pie with a knife to remove any excess.
Caramelized Onion
- Melt the butter in a medium-sized frying pan on medium-high heat.
- Add the chopped onions and brown for 5-10 minutes. Be sure to stir consistently to prevent burning.
- Turn down the heat to medium-low, and continue to brown for 20-25 minutes until the onions are soft and golden brown.
- Pour the heavy cream into the caramelized onions, bring to a quick boil, and turn off the heat.
- Season with sea salt and pepper and allow to cool.
Pie
- Whisk together the caramelized onion, eggs, mozzarella, half the Parmesan, thyme, sea salt, and pepper in a medium-sized bowl.
- Pour the egg mixture into the baked pie crust and top with the remaining Parmesan.
- Bake for 25-27 minutes, until golden and baked through.
Video
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
