Easy Crustless Quiche Recipe

4.99 from 67 votes

Total 55 minutes minutes

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This delicious crustless quiche is a casserole-style quiche made without crust. Customize it with spinach, bacon, broccoli, or other cheeses for special occasions or easy breakfast on the go.

Easy Crustless Quiche Recipe - The Kitchen Girl (1)

Why you'll love this recipe

Crustless quiche is a casserole-style quiche without the crust. Unlike a classic quiche, it's naturally gluten-free, so it accommodates certain restricted diets and, bonus – this reduces calories! But don't let those words fool you because it is packed with color, texture, and so much flavor.

It's an ideal entree for special occasion brunch for the same reasons. Not to mention, you can go crazy with your favorite ingredients such as spinach, bacon, broccoli, and any kind of cheese!

Now that we know this is a quiche in casserole form without crust, we can love that the no-crust part also won't get soggy during storage and reheat. This makes it perfect for make-ahead and breakfast on the go!

Ingredient notes

Ingredient amounts are included in the printable recipe below. Feel free to use variations.

olive oil - or preferred cooking oil
garlic and onions - I prefer fresh garlic cloves, but a small amount of granulated garlic would work too.
bell peppers - I used orange peppers for this recipe. You can substitute broccoli here too!
mushrooms - the best natural substitute for meat and they add so much flavor.
kale - or any fresh greens (spinach, chard, etc)
eggs - store-bought or farm fresh eggs will work.
milk - cream is traditionally used in quiche, but I prefer to use milk to reduce calories. Feel free to use heavy cream or half and half.
salt and pepper - Adjust these to your liking.
fresh thyme - Use about ⅔ less if using dried thyme
cheese - I used Asiago for the photos. Any hard or soft cheese will be great.

Why make a quiche without crust?

Quiche originated in France as a pastry crust or shell filled with eggs and cream for a custard-like texture, along with other ingredients like meat, vegetables, and cheese. A crustless quiche has all of the delicious benefits of quiche, only without the crust, which makes it approved for certain diets. As mentioned earlier, it's easier to store for meal prep or special occasions.

How to make crustless quiche

Full recipe instructions are in the printable recipe below.

Step 1: To prep ingredients for quiche, chop veggies and set aside. Whisk together eggs, milk, and seasonings in a mixing bowl.

Step 2: Saute vegetables in heated oil in a skillet (or cook in an air fryer) and transfer to a prepared casserole dish. Pour egg mixture over sauteed vegetables.

Easy Crustless Quiche Recipe - The Kitchen Girl (2)

Easy Crustless Quiche Recipe - The Kitchen Girl (3)

Step 3: Bake uncovered 35-45 minutes in a conventional oven, or 25 to 30 minutes in an air fryer toaster oven, until eggs are set.

Easy Crustless Quiche Recipe - The Kitchen Girl (4)

Easy Crustless Quiche Recipe - The Kitchen Girl (5)

Step 4. Cool slightly, cut into portions, and serve warm. Get make-ahead instructions in the next section.

Can I make crustless quiche ahead?

Yes! This recipe is made for it! You can cook it and enjoy later or prepare components to assemble and bake later. Here's how to do either option:

When preparing whole crustless quiche for later use: Allow quiche to cool completely. Leave whole or cut into portions. Cover and refrigerate in airtight containers until it's time to reheat and serve.

If you need to transport an unbaked quiche, I recommend preparing the components for travel and assemble just before baking. Here's how

Saute veggies and allow to cool competely.
Beat together eggs, milk, salt, pepper, and thyme.
Refrigerate both components in separate airtight containers.
When it's time to bake, preheat the oven to 350 degrees Fahrenheit, spray the baking dish, and resume with step 8 of the recipe below.

Reheat quiche whole or in pieces using an oven, microwave, or air fryer on medium heat until warmed through in the center.

Recipe variations

This quiche recipe is naturally meatless and scrumptious as it is, but you can customize any of the ingredients to your liking. Here are some ideas.

vegetables - Roasted butternut squash, spaghetti squash or steamed sweet potatoes would be perfect during autumn. Sauteed asparagus and Brussels sprouts would be great during spring season. Fresh spinach or steamed broccoli can be used in place of kale anytime!

cheese - Add your favorite cheese to the egg mixture or distribute on the surface before baking. I love goat cheese, mozzarella, or cheddar for this quiche recipe.

proteins - Leftover baked ham, cooked bacon, or cooked sausage would be a great addition for the meat-lovers in your life.

fresh herbs - Add a little chopped fresh parsley or basil, either before or after you bake the quiche, for another layer of flavor.

Easy Crustless Quiche Recipe - The Kitchen Girl (7)

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📖 Recipe

This delicious crustless quiche is a casserole-style quiche made without crust. Customize it with spinach, bacon, broccoli, or other cheeses for special occasions or easy breakfast on the go.

Prep TimePrep Time: 15 minutes mins

Cook TimeCook Time: 40 minutes mins

Total timeTotal Time: 55 minutes mins

Yield 8 pieces

Author Traci Antonovich

4.99 from 67 votes

Ingredients

▢ 2 tablespoons Olive Oil or preferred oil
▢ 3 cloves Garlic minced
▢ ½ medium Onion diced (about 1 cup)
▢ ½ large Bell Pepper diced (about 1 cup)
▢ 8 ounces Mushrooms sliced (about 2 cups)
▢ 4 cups Kale (or Spinach) chopped
▢ 12 Eggs
▢ ½ cup Milk any variety
▢ ½ teaspoon Sea Salt
▢ ¼ teaspoon Black Pepper
▢ 1 teaspoon fresh Thyme or ¼ tsp dried thyme
▢ 1 cup Shredded Asiago Cheese or preferred cheese

Equipment

Instructions

Preheat oven to 350 degrees Fahrenheit. For air fryer ovens, use the same temperature and select the bake setting.
Coat a 12 x 10 baking dish with cooking spray or oil. Set aside.
In a large skillet, heat OLIVE OIL over medium-high heat.
Sauté GARLIC, GREEN ONION, and BELL PEPPERS until slightly tender.
Add MUSHROOMS and KALE. Sauté until tender.
Transfer cooked vegetables to the prepared baking dish and set aside.
In a mixing bowl, whisk together EGGS, MILK, SALT, PEPPER, and THYME.
Add egg mixture to the baking dish. Sprinkle CHEESE over the top.
Bake uncovered 35-45 minutes in a conventional oven, or until eggs are set. For air fryer ovens, bake 25 to 30 minutes
Carefully transfer quiche out of oven and rest for 5 minutes. Serve warm.
To store, allow quiche to cool completely and store in an airtight container up to 5 days.

Final step

Click stars to vote. Please visit 'Comments' below for reviews.

4.99 from 67 votes

Video

Recipe Notes

Swap any vegetables in this crustless quiche with broccoli, bacon, spinach, or any other vegetables!

Did you make this recipe? I'd love to see it!Follow @thekitchengirl on Instagram, snap a photo, and tag #thekitchengirl. This always makes my day!

Nutrition

Course Breakfast

Cuisine American

Diet Gluten Free

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Easy Crustless Quiche Recipe - The Kitchen Girl (2024)

FAQs

What is the difference between a quiche and a crustless quiche? ›

Crustless quiche is similar to a traditional quiche where it has savory egg custard loaded with cheese and mix-ins, but it's baked without a pie crust. It's the easygoing egg bake answer to practically every breakfast problem I've ever seen.

Is milk better than heavy cream in quiche? ›

Heavy Cream and Milk – For the best tasting quiche, use a combination of whole milk and heavy cream. (Or simply use half-and-half.) Using just heavy cream produces an overly thick filling. Whole milk is great, but a combo of heavy cream and milk is better.

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Why is my crustless quiche soggy? ›

According to Real Simple, this typically occurs when adding too-wet ingredients to the quiche filling, layering the egg custard with, for example, large slices of raw tomato or raw zucchini. These vegetables, while tasty, have a high water content when raw, which will weep into the quiche as it bakes.

Read On ›

Why does my crustless quiche fall? ›

Excess moisture is one reason why quiches collapse in a watery pool on your plate. Vegetables and meats like ham give off tremendous amounts of water when they're cooked. Therefore, if you're using vegetables in your quiche, it's imperative that you cook them first.

Learn More Now ›

What Italian egg dish is similar to a crustless quiche? ›

A frittata is an Italian egg dish that is like an omelet or quiche but lazy and forgiving. It's lazy because the recipe is easy, and you don't have to do the tricky omelet fold. It's also forgiving since you don't have to make a crust and uses no cream or milk, unlike an omelet or quiche.

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What is a French crustless quiche called? ›

A frittata, sometimes called a crustless quiche, has no crust, and you can bake it directly in a pan or skillet.

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What is the milk to egg ratio for quiche? ›

Quiche Ratio: 1 large egg to 1/2 cup of dairy

You'll need to increase the amount of eggs and milk based on the size of your quiche, so knowing the basic ratio makes it really easy to scale up or down. For a standard 9-inch quiche: Use 3 large eggs (6 ounces) 1 1/2 cups of whole milk or cream (12 ounces)

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Can I use 2% milk instead of heavy cream for quiche? ›

For gluten-free crust, try making a sweet potato crust. The Custard: For your custard to set properly in the oven, use this easy ratio: 1 part dairy to 2 parts eggs. Classic custards use heavy cream, but 2% milk contains a fraction of the saturated fat and is still plenty rich.

Get More Info Here ›

What is a substitute for heavy cream in a quiche recipe? ›

Recommended substitutes: Whole milk, evaporated milk, coconut milk, onion cream.

Should quiche be cooked at 350 or 375? ›

BAKE in center of 375°F oven until center is almost set but jiggles slightly when dish is gently shaken and knife inserted near center comes out clean, 30 to 40 minutes.

Tell Me More ›

Can you put too many eggs in a quiche? ›

Using too many eggs in the custard results in a quiche that rubbery and too firm when baked, while not using enough will prevent the custard from setting. Follow This Tip: Remember this ratio: 1 large egg to 1/2 cup of dairy.

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Why do you put flour in quiche? ›

Roll it out a tad bit thicker than you normally would for a standard pie if possible, and absolutely use it all. Confidently press any overhang or extra pieces into the walls of your pan. Add flour to your filling: Adding a bit of flour to your quiche filling helps absorb moisture and stabilize things in general.

Should crust be prebaked for quiche? ›

So, you can without problem cook your quiche without first blind-baking the crust. The difference will be in the crispness of the crust: if you try to get it crispy, you should prebake, if you don't mind it being rather, well, “plain”, you don't.

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Is a frittata just a crustless quiche? ›

Crust: A quiche has crust while a frittata does not. Sometimes, quiche is baked without crust. Base Ingredients: While both frittatas and quiches are made with eggs, quiche is made with an egg custard, which also includes cream or milk. Some frittatas are made with egg whites only.

What is another name for a crustless quiche? ›

A frittata, also known as a crustless quiche, is a creamy, savory egg custard baked with any combination of fillings, usually vegetables and meat. Unlike quiche, it's not prepared inside of a flaky pastry.

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What's the difference between quiche and quiche lorraine? ›

To be considered Quiche Lorraine, the quiche must be made with eggs, heavy cream, bacon, and Swiss cheese. Any quiche that strays from this formula with the omission of bacon or the addition of other ingredients such as ham, sausage, vegetables, etc. is considered quiche, not Quiche Lorraine.

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What qualifies as a quiche? ›

Quiche (/ˈkiːʃ/ KEESH) is a French tart consisting of pastry crust filled with savoury custard and pieces of cheese, meat, seafood or vegetables. A well-known variant is quiche lorraine, which includes lardons or bacon. Quiche may be served hot, warm or cold.

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