Name: Flaky Gluten-Free Quiche with Spinach & Leeks
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: French
Ingredients: 1 gluten-free pie crust; 6 large eggs; 1 cup milk; 1 cup heavy cream; 1 cup shredded cheese (such as Gruyere or cheddar); 1 cup cooked vegetables (such as spinach, mushrooms, or onions); 1/2 cup cooked meat (optional, such as bacon or ham); 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1/4 teaspoon nutmeg

Why You’ll Love Flaky Gluten-Free Quiche with Spinach & Leeks Recipe

This quiche has everything you want in a savory bake: a crisp, golden crust, a silky custard filling, and plenty of flavor from vegetables and cheese. The spinach and leeks make it feel fresh and balanced, while the Gruyère adds a deep, savory richness.

You’ll also love how versatile it is. It can be served warm, at room temperature, or chilled, which makes it perfect for meal prep, entertaining, holiday brunches, or make-ahead lunches. Even better, the recipe feels special without being overly complicated.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

For the crust and vegetables

1 9-inch parbaked gluten-free pie crust
5 large eggs
1 tablespoon olive oil or butter
3 cups diced leek, from 2 to 3 medium leeks, washed and drained
Fine sea salt
8 ounces baby spinach, stems removed

For the savory custard

2 tablespoons gluten-free flour, such as sweet rice flour, gluten-free all-purpose flour, or cassava flour
Freshly ground black pepper
1 cup whole milk
3/4 cup heavy cream or crème fraîche
6 ounces shredded Gruyère cheese

Directions

Prepare and parbake the gluten-free pie crust according to your preferred method.
Separate one egg and beat the white well. Brush the parbaked crust lightly with the egg white, then return it to the oven for 3 to 5 minutes. This helps create a barrier that keeps the crust crisp. Save the remaining yolk and unused white for the custard.
Heat a wide skillet over medium-low heat. Add the olive oil or butter, diced leeks, and a small pinch of salt. Cook, stirring often, until the leeks are very tender but not browned, about 10 to 15 minutes. Transfer them to a bowl.
Add the spinach to the skillet in batches and cook until wilted, about 2 to 3 minutes. Move the spinach to a strainer and press out as much moisture as possible. You should end up with about 1 cup of cooked spinach.
In a large bowl, whisk together the gluten-free flour, about 3/4 teaspoon salt, and a few grinds of black pepper. Add one egg first and whisk until smooth so the flour blends in without lumps. Whisk in the remaining eggs, including the reserved egg from brushing the crust. Slowly whisk in the milk and cream until combined.
Preheat the oven to 350°F and place a rack in the lower third of the oven. Set the crust on a baking sheet.
Sprinkle half of the shredded Gruyère over the bottom of the crust. Add all of the leeks, then the spinach, then the remaining cheese.
Stir the custard once more and carefully pour it into the crust.
Bake for 45 to 60 minutes, or until the top is puffed and golden and a knife inserted near the center comes out without liquid. Rotate the quiche once or twice during baking for even browning.
Let the quiche cool slightly before slicing and serving.

Servings and timing

This recipe makes 8 servings.

Prep time: 45 minutes
Cook time: 45 minutes
Total time: 1 hour 30 minutes

Variations

This quiche is easy to adapt based on what you have on hand.

Try swapping the Gruyère for Swiss cheese, white cheddar, or fontina for a different flavor profile. You can also replace the spinach with sautéed kale, chard, or roasted asparagus.

For a dairy-free version, use full-fat canned coconut milk in place of the milk and choose a dairy-free cream alternative. You can also use a grain-free crust if you want a different gluten-free base.

To make it heartier, add cooked mushrooms, caramelized onions, or roasted potatoes. For a brighter finish, serve it with fresh herbs sprinkled over the top.

Storage/Reheating

Store leftover quiche tightly covered in the refrigerator for up to 4 days.

To reheat, warm individual slices in a 325°F oven for about 10 to 15 minutes, or until heated through. You can also reheat slices in the microwave, though the crust will stay crisper in the oven.

For longer storage, freeze slices individually wrapped and placed in an airtight container for up to 2 months. Thaw overnight in the refrigerator before reheating.

FAQs

Can I make this quiche ahead of time?

Yes. This quiche is a great make-ahead dish. You can bake it a day in advance, refrigerate it, and reheat it gently before serving.

Why should I parbake the crust first?

Parbaking helps prevent a soggy bottom crust. Since the filling is rich and liquid-heavy, giving the crust a head start keeps it crisp.

What does brushing the crust with egg white do?

The egg white creates a thin seal over the crust, which helps keep the custard from soaking into it during baking.

Can I use frozen spinach instead of fresh?

Yes, but make sure it is fully thawed and very well drained. Excess moisture can make the filling watery.

What can I use instead of leeks?

You can substitute onions, shallots, or green onions. The flavor will be slightly different, but still delicious.

Can I use milk only and skip the cream?

You can, but the texture will be a little less rich and silky. The cream adds body and that classic custardy finish.

How do I know when the quiche is done?

The top should look puffed and lightly golden, and a knife inserted near the center should come out without liquid. The center can still have a slight jiggle, but it should not look runny.

Can this quiche be served cold?

Yes. It tastes great warm, at room temperature, or cold, which makes it excellent for packed lunches or brunch spreads.

What is the best cheese for this recipe?

Gruyère is ideal because it melts beautifully and has a nutty, savory taste. Swiss, fontina, or cheddar also work well.

Can I freeze the whole quiche?

Yes. Let it cool completely, wrap it well, and freeze it. For best texture, thaw it in the refrigerator and reheat in the oven before serving.

Conclusion

This flaky gluten-free quiche with spinach and leeks is the kind of recipe that feels both comforting and impressive. The crisp crust, creamy filling, and savory vegetable-cheese combination make it a dependable favorite for brunch, lunch, or dinner. Whether you serve it fresh from the oven or enjoy leftovers the next day, it is a delicious recipe that proves gluten-free baking can be every bit as satisfying as the classic version.

Flaky Gluten-Free Quiche with Spinach & Leeks

Why You’ll Love Flaky Gluten-Free Quiche with Spinach & Leeks Recipe