Caramelized Onion and Spinach Quiche

Name: Caramelized Onion and Spinach Quiche
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 8 servings
Ingredients: 1 pre-made pie crust; 2 tablespoons olive oil; 2 large onions, sliced; 3 cups fresh spinach, roughly chopped; 4 large eggs; 1 cup heavy cream; 1 cup shredded cheese (cheddar or gruyere); Salt and pepper, to taste; Pinch of nutmeg

Highlighted under: Easy Prep Meal Collection

I have always been a fan of quiches, and this Caramelized Onion and Spinach Quiche has quickly become a favorite in my kitchen. The sweet, caramelized onions add a deep flavor that pairs beautifully with the fresh spinach. I love how versatile this dish is; it can be served for breakfast, brunch, or even a light dinner. Not only is it delicious, but watching the ingredients come together is a true joy. Let's dive into this delightful recipe!

Created by

Emily

Last updated on 2026-01-08T15:46:34.523Z

When I first experimented with combining caramelized onions and spinach in a quiche, I was amazed at how the flavors melded together. Caramelizing the onions slowly brings out their natural sweetness, which balances the earthiness of the spinach. I found that using a mix of cheeses added more depth to the dish, making it far more satisfying.

Another tip that changed the game for me was blind-baking the crust before filling it. This prevents a soggy bottom and ensures that every bite is perfectly crisp. Trust me, it’s worth the extra step!

        Why You'll Love This Quiche
        Sweet, caramelized onions perfectly complement the fresh spinach
A flaky crust that holds up beautifully under the savory filling
Versatile enough for any meal of the day, from breakfast to dinner

      

Understanding the Role of Ingredients

In this Caramelized Onion and Spinach Quiche, each ingredient plays a crucial role in achieving the perfect balance of flavors and textures. The pre-made pie crust serves as a sturdy base that provides contrast to the creamy filling. While homemade crusts can be an option, a store-bought version saves time and ensures a consistent flaky texture when baked correctly. Just remember to pre-bake it to prevent a soggy bottom.

The onions must be caramelized slowly over medium heat; this technique enhances their natural sweetness and develops a rich, complex flavor. The process takes about 15-20 minutes and requires your patience and attention. Stir occasionally to avoid burning, as the goal is to achieve a deep amber color without crisping them too much.

Tips for Perfecting Your Quiche

Achieving a well-set filling is key to a successful quiche. Be sure to whisk the eggs and cream thoroughly before incorporating the cheese and added ingredients. The mixture should look smooth and glossy. If you're looking for lighter options, consider using half-and-half instead of heavy cream or substituting some egg with egg whites for a lower-calorie dish.

Another critical step is ensuring that your quiche bakes evenly. To do this, place your quiche on the center rack of the oven. If you notice the top browning too quickly, lightly cover it with aluminum foil during the last stages of baking. This method allows the center to finish setting while preventing the edges from becoming overly dark.

Ingredients

Gather these ingredients before you begin:

Ingredients for the Quiche

1 pre-made pie crust
2 tablespoons olive oil
2 large onions, sliced
3 cups fresh spinach, roughly chopped
4 large eggs
1 cup heavy cream
1 cup shredded cheese (cheddar or gruyere)
Salt and pepper, to taste
Pinch of nutmeg

Make sure to have everything ready for a smooth cooking process!

Instructions

Follow these steps to create your Caramelized Onion and Spinach Quiche:

Preheat the Oven

Preheat your oven to 375°F (190°C).

Caramelize the Onions

In a skillet, heat the olive oil over medium heat. Add the sliced onions and a pinch of salt. Cook slowly, stirring occasionally, until the onions are golden brown and caramelized, about 15-20 minutes.

Prepare the Spinach

Add the chopped spinach to the skillet with the onions and cook for another 3-5 minutes until the spinach is wilted. Remove from heat and allow to cool.

Mix the Quiche Filling

In a large bowl, whisk together the eggs, heavy cream, shredded cheese, nutmeg, salt, and pepper. Once combined, stir in the caramelized onion and spinach mixture.

Assemble the Quiche

Pour the filling into the pre-baked pie crust, spreading it evenly. Bake for 30-35 minutes or until the quiche is set and the top is golden.

Cool and Serve

Allow the quiche to cool for a few minutes before slicing. Serve warm or at room temperature.

Enjoy your delicious homemade quiche!

Pro Tips

For a puffier quiche, use room temperature eggs and let the quiche sit for a bit after baking before slicing. This helps to set the filling.

Make-Ahead and Storage Tips

This quiche can be made ahead of time, making it a perfect option for meal prep or a busy weeknight dinner. After baking, allow it to cool completely before wrapping it in plastic wrap or placing it in an airtight container. The quiche can be stored in the refrigerator for up to three days without losing its flavor or texture.

If you want to store it for longer, consider freezing individual slices. Wrap them tightly in plastic wrap and then place them in a freezer-safe bag. To reheat, thaw in the refrigerator overnight and warm in a 350°F (175°C) oven for about 10-15 minutes, or until heated through.

Serving Suggestions

This Caramelized Onion and Spinach Quiche is delightful on its own, but it pairs beautifully with a fresh salad or a side of roasted vegetables for a more substantial meal. A light vinaigrette can elevate the dish further, bringing balance to the rich filling without overwhelming it.

For a fun twist, consider serving the quiche with a dollop of crème fraîche or a sprinkling of freshly chopped herbs, such as chives or parsley, just before serving. This adds an extra layer of flavor and a pop of color that makes your presentation even more appealing.

Questions About Recipes

→ Can I use other vegetables in this quiche?

Absolutely! Feel free to substitute or add vegetables like bell peppers, mushrooms, or zucchini according to your preference.

→ How can I store leftovers?

Leftover quiche can be stored in the refrigerator for up to 3 days. Reheat it in the oven for the best texture.

→ Can I make the crust from scratch?

Yes! A homemade pie crust will work beautifully. Just make sure to blind-bake it before adding the filling.

→ Is this quiche suitable for freezing?

Yes, you can freeze the quiche before baking. Wrap it tightly and store it in the freezer for up to 2 months. Just bake it directly from frozen, adding a bit of extra time.