Crustless Quiche with Summer Vegetables

Less fussy to make than a classic quiche, this crustless quiche is a celebration of warmer days. It embraces ripe summer vegetables: zucchini, eggplant and cherry tomatoes, all encased in a rich egg custard with melty Swiss cheese and fresh herbs. This is a perfect gluten-free brunch, lunch, or dinner that you can easily prepare ahead as well!

What is a crustless quiche?

A crustless quiche is a take on a classic French quiche, without – you guessed it – a crust! It simply consists of a classic quiche filling (eggs, milk, cream and cheese), poured over par-baked vegetables and baked in the oven. The texture is soft and satisfying, without the carbs and richness of a buttery crust.  

There are no difficult techniques or skills involved in this recipe. And if you have already made a quiche before, this recipe will likely feel like a breeze – since you don’t need to make a pie crust.

My go-to ratio for making a quiche filling is 10 eggs for 1 to 2 cups of liquid. The liquid can be just milk or a mix of milk and cream, for added richness. For this quiche, I tested that 8 eggs for 1 ½ cup milk and cream gives just the right texture. It is firm enough to be satisfying and soft enough to match the texture of the tender vegetables. That said, a quiche is very forgiving, so you can adjust the quantity of liquid if you would like. For instance, use only 1 cup milk if you are aiming for a firmer quiche that you can eat by hand once sliced.

Common Questions

When do you serve a quiche?

In France, a quiche in France is served as a quick lunch or dinner, often alongside a salad or a soup. Quiches can be enjoyed warm or cool, which makes them a year-round staple in a French kitchen. A quiche is also a perfect recipe for brunch!

How long will a crustless quiche last?

This crustless quiche will last for about 4 days stored in an airtight container in the fridge. This is a great make ahead recipe for hosting: prepare it the night before, store it in the fridge and simply re-heat it for about 5-10 minutes at 350F (180C) before serving.

How to store a crustless quiche 

After making (and enjoying) this quiche – if you have any leftovers – you can store it in the refrigerator or in the freezer.

• In the refrigerator: store it in an airtight container in the fridge for up to 4 days. Reheat the quiche in a microwave or in the oven for about 5-10 minutes at 350°F (180°C). 
• In the freezer: store it in a (freezer-friendly) airtight container and place it in the freezer for up to 3 months. To reheat, let the quiche thaw in the fridge before heating it through in the oven. 

Cooking notes :

• The amount of filling in this recipe is just right for a low-sided 9-inch (22.9cm) tart pan or pie dish. Do not fill the pan/dish to the rim, as the filling will puff up as it bakes and deflate slightly as it cools down. 
• For best results, I suggest you use the listed vegetables (zucchini, eggplant, and cherry tomatoes) and their quantities. However, since a quiche is quite forgiving, you can opt for different vegetables if you would like, such as bell peppers.
• A key to this recipe is to make sure the vegetables are well cooked until most of their excess moisture is gone. This ensures the quiche won’t become too liquidy.
• For making a quiche, Gruyère is my go-to cheese. This hard, Swiss-made cheese is subtly salty with delicious nutty notes. It also melts very well and creates a great quiche texture. In France, Gruyère is affordable and widely available. It often comes pre-grated, sold in individual pouches. In the US/Canada, Gruyère is a bit more costly than your average block of cheese, but well worth it to use in this recipe. As a more affordable option, you can opt for white or orange cheddar or grated mozzarella.

I hope you’ll love this Crustless Quiche with Summer Vegetables as much as I do! This recipe is enough for 8 to 10 people, served alongside a salad or a soup. If you have any questions, please feel free to leave a comment. 

You may also like:

• Spinach and Cheese Quiche 
• Chicken and Mushroom Pie (Tourte)
• Classic French Quiche Lorraine 
• Classic French-style Potato Salad
• Vegetable Tian from Provence
• Sweet Pea Ham Quiche
• Ham Cheese Olive Bread

Crustless Quiche with Summer Vegetables

Print Recipe

Serves: 8-10 Prep Time: 20 Minutes Cooking Time: 45 Minutes 45 Minutes

Nutrition facts: 200 calories 20 grams fat

Rating: 4.5/5

( 8 voted )

Ingredients

1 tbsp (15ml) extra virgin olive oil
1 garlic clove, peeled and minced
1 onion, peeled and sliced in half round
1 medium zucchini, sliced
½ medium eggplant, sliced in half rounds
½ cup cherry tomatoes
8 large eggs
1 cup (240ml) milk (2%)
½ cup (120ml) heavy cream (35% mf)
½ tsp salt
¼ tsp freshly ground black pepper
1 tbsp Dijon mustard
2 tbsp chive, finely chopped
1 cup (4oz/100g) shredded Swiss cheese (ie. Gruyère or Emmental)

Instructions

Step 1 – Preheat your oven to 375°F (190°C) with a rack in the middle. Grease a 9-inch (22.9cm) pie dish with butter or cooking spray.

Step 2 – Heat up the extra virgin olive oil in a frying pan over medium heat. Add the onion and garlic, and sauté for 2-3 minutes until fragrant. Add the zucchini and eggplant, and sauté for 10-12 minutes until softened, browned and most of the excess moisture is gone.  Transfer into the prepared pie dish along with the cherry tomatoes, and scatter vegetables to cover bottom evenly.

Step 3 – In a large mixing bowl, beat the eggs with the milk, heavy cream, salt, pepper, Dijon mustard, 1 tablespoon of chive and ¾ cup Gruyère cheese.

Step 4 – Pour the egg mixture over the vegetables, in the dish, and sprinkle with the remaining ¼ cup Gruyère cheese and 1 tablespoon of chive.

Bake for 40-45 minutes, until the edges are set and a knife inserted in the center comes out clean. Transfer to a cooling rack and let cool for at least 15 minutes before serving.