Caramelized Onion, Mushroom, and Spinach Quiche

Name: Caramelized Onion, Mushroom, and Spinach Quiche
Prep time: 20 min
Cook time: 50 min
Total time: 80 min
Yield: 8 slices
Cuisine: French
Ingredients: 2 tablespoons olive oil; 2 large onions (thinly sliced); 250 g mushrooms (sliced); 3 cups fresh spinach (washed and dried); 3 eggs (large); 1 cup milk; 1 cup heavy cream; 1 cup grated Gruyère cheese; 1/2 teaspoon salt; 1/4 teaspoon black pepper (freshly ground); 1 pre-baked pie crust (9-inch)

80 min 8 slices Medium

All Recipes

A savoury quiche filled with caramelized onions, mushrooms, and spinach, perfect for any meal of the day.

Prep

20 min

Cook

50 min

Total

80 min

Servings

Difficulty

Medium

Quiche is a classic dish that lends itself to endless variations. This version, featuring caramelized onions, mushrooms, and spinach, is a delightful combination of flavours and textures. The sweetness of the onions and the earthiness of the mushrooms complement the fresh spinach beautifully. This quiche is not only a wonderful addition to breakfast or brunch, but also serves as a satisfying lunch or dinner option. The harmony of ingredients wrapped in a flaky crust makes it a comforting choice for any occasion.

Instructions

Preheat the oven

Preheat your oven to 190°C (375°F).

Caramelize onions

In a large skillet over medium heat, warm the olive oil and add the onions. Cook, stirring occasionally, until golden brown and caramelized, about 20 minutes.

Pro tip: Add a pinch of sugar to speed up caramelization.

Cook mushrooms

Add the sliced mushrooms to the skillet with the onions and cook until softened, about 5 minutes.

Wilt the spinach

Add the spinach to the skillet and cook until just wilted, about 2 minutes. Remove from heat and set aside.

Pro tip: Ensure excess moisture is drained from the spinach.

Prepare the custard

In a large bowl, whisk together the eggs, milk, heavy cream, salt, and pepper until well combined.

Assemble the quiche

Spread the onion, mushroom, and spinach mixture evenly over the pre-baked pie crust. Pour the custard mixture over the top and sprinkle with Gruyère cheese.

Bake the quiche

Place the quiche in the oven and bake for 30-35 minutes, or until the filling is set and the top is golden brown.

Pro tip: Check for doneness by inserting a knife into the centre; it should come out clean.

Cool and serve

Allow the quiche to cool for at least 10 minutes before slicing and serving.

💡

Tips & Tricks

Use a pre-baked pie crust to save time.
Ensure the spinach is thoroughly drained to avoid a soggy quiche.
Caramelize onions slowly for maximum sweetness.
Let the quiche cool slightly before slicing for cleaner cuts.

Frequently Asked Questions

How do I make a spinach quiche?

To make a spinach quiche, combine caramelized onions, mushrooms, and spinach with a custard of eggs, milk, and cream, bake in a pie crust.

Can I use frozen spinach?

Yes, you can use frozen spinach. Thaw it first and squeeze out excess moisture before adding to the quiche.

What cheese is best for quiche?

Gruyère cheese is excellent for quiche due to its melting properties and nutty flavour.

How long to bake a quiche?

Bake the quiche for 30-35 minutes at 190°C (375°F) until the filling is set.

Can I make quiche ahead of time?

Yes, you can make the quiche up to three days ahead. Store it in the refrigerator and reheat before serving.

Serving Suggestions

Serve this quiche warm or at room temperature, perhaps with a fresh side salad for a complete meal. It pairs well with a crisp white wine or a light-bodied red. This quiche can be made ahead of time and stored in the refrigerator for up to three days. To reheat, simply pop it in a preheated oven at 180°C (350°F) until warmed through, about 10-15 minutes.