Savory Spinach and Onion Quiche

Name: Savory Spinach and Onion Quiche
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Yield: 8 servings
Ingredients: 1 refrigerated pie crust; 1 cup fresh spinach, chopped; 1 large onion, thinly sliced; 4 large eggs; 1 cup milk; 1 cup shredded cheese (Swiss or cheddar); Salt and pepper to taste; 2 tablespoons olive oil

Highlighted under: Family Dinner | Homestyle Cooking

I absolutely love making this Savory Spinach and Onion Quiche, especially on weekends when I have friends over for brunch. The combination of fresh spinach, caramelized onions, and creamy custard encased in a flaky crust makes for a delightful dish that keeps everyone coming back for more. What I adore about this recipe is how versatile it is; you can easily add your favorite cheese or protein if you like. Plus, it's a great way to use up any leftover veggies in your fridge!

Created by

The Florencebakes Team

Last updated on 2026-03-05T06:14:21.726Z

When I first tried making a quiche, I was surprised at how simple yet elegant it could be. I wanted to create something that showcased fresh ingredients while also being comforting and satisfying. After experimenting with different flavor combinations, I settled on this winning recipe that highlights spinach and sweet onions.

The key to making this quiche shine is to take your time with the onions—slowly caramelizing them enhances their sweetness and depth of flavor. I also recommend letting the quiche rest before slicing to ensure perfect slices every time!

Why You Will Love This Recipe

Perfectly flaky crust that pairs well with the flavorful filling
Rich, savory filling with the goodness of spinach and onions
Easy to customize with your choice of cheese or additional vegetables

Perfecting the Crust

The key to a successful quiche lies in the crust. A refrigerated pie crust is convenient, but make sure to handle it gently to avoid tearing. For added flakiness, chill the crust in the refrigerator for 15-20 minutes before baking. This rest time helps the dough maintain its shape during baking and prevents shrinkage.

To achieve a golden brown finish, consider covering the edges with aluminum foil if they brown too fast during baking. Additionally, blind-baking the crust for 10 minutes at the onset can add extra structure and prevent a soggy bottom.

Enhancing the Filling

Balancing the savory flavors in the filling is essential. The sweetness of caramelized onions beautifully complements the earthiness of spinach. When caramelizing the onions, not only should you aim for golden color, but also a soft, silky texture. If your onions start to stick, add a splash of water or stock to deglaze the pan and incorporate those flavorful bits back into the mixture.

Feel free to experiment with the cheese! While Swiss and cheddar are recommended, I often add feta for a tangy twist or Gruyère for added depth. If you prefer a dairy-free version, substituting with almond milk and vegan cheese will work, just adjust the baking time slightly as dairy-free options may cook quicker.

Ingredients

Gather these fresh ingredients to create the ultimate quiche:

Main Ingredients

1 refrigerated pie crust
1 cup fresh spinach, chopped
1 large onion, thinly sliced
4 large eggs
1 cup milk
1 cup shredded cheese (Swiss or cheddar)
Salt and pepper to taste
2 tablespoons olive oil

Once you've prepared your ingredients, you're ready to start cooking!

Instructions

Follow these steps to make your quiche:

Preheat Oven and Prepare Crust

Preheat your oven to 375°F (190°C). Roll out the pie crust into a 9-inch pie pan, pressing it against the edges. Prick the bottom with a fork to prevent bubbling.

Caramelize the Onions

In a skillet, heat the olive oil over medium heat. Add the sliced onions and cook slowly, stirring occasionally, for about 15 minutes, or until they are golden and caramelized. Add the chopped spinach and cook for an additional 2 minutes until wilted. Season with salt and pepper.

Prepare the Egg Mixture

In a large bowl, whisk together the eggs and milk. Stir in the shredded cheese and then add the caramelized onion and spinach mixture. Mix well until combined.

Fill the Pie Crust

Pour the egg mixture into the prepared pie crust, spreading it evenly. This ensures every bite is filled with flavor.

Bake the Quiche

Bake in the preheated oven for 35-40 minutes, or until the top is puffed and golden brown. A knife inserted in the center should come out clean.

Cool and Serve

Allow the quiche to cool for about 10-15 minutes before slicing. This will help the filling set and make serving easier.

Your delicious quiche is now ready to be enjoyed!

Pro Tips

For a richer flavor, feel free to mix in some herbs like thyme or nutmeg. This quiche reheats beautifully and can also be enjoyed cold as a picnic treat.

Make-Ahead and Storage

This quiche is an excellent candidate for meal prep! You can assemble it a day ahead of time and store it in the refrigerator before baking. Just cover it tightly with plastic wrap to prevent the crust from drying out. If you have leftovers, they can be refrigerated for up to three days. Reheat slices in the oven at 350°F (175°C) for about 15-20 minutes to restore the texture, as microwaving may make it soggy.

For freezing, allow the baked quiche to cool completely before wrapping it tightly in plastic wrap and then aluminum foil. It can be frozen for up to two months. When you're ready to enjoy it, defrost in the refrigerator overnight, then reheat it in the oven to crisp the crust back up.

Serving Suggestions

This quiche is versatile in its serving options. It can be enjoyed warm, at room temperature, or even cold. Pair it with a light salad dressed with lemon vinaigrette for a refreshing contrast, or serve it alongside roasted vegetables for a heartier meal. I like to add a dollop of sour cream or crème fraîche for a creamy touch on top.

For an added burst of flavor, consider garnishing your slices with fresh herbs like basil or chives before serving. This not only enhances the aesthetic appeal but also adds a layer of brightness that complements the rich filling beautifully.

Questions About Recipes

→ Can I make the quiche ahead of time?

Absolutely! You can prepare the quiche the day before and bake it the morning of your event. Just be sure to let it cool completely before storing it.

→ What can I substitute for spinach?

Kale or Swiss chard are great alternatives to spinach if you want to mix it up.

→ Is it possible to freeze the quiche?

Yes, you can freeze the unbaked quiche. Just wrap it tightly in plastic wrap and foil, and bake it straight from the freezer, adding extra baking time as needed.

→ What types of cheese work best?

Swiss, cheddar, feta, or goat cheese all work wonderfully in this quiche. Choose your favorite or a combination for added flavor!