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Crustless Spinach Quiche

4.91 from 11 votes
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posted: 05/05/21

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This post may contain affiliate links. Please read my disclosure policy

This Crustless Spinach Quiche is the perfect light breakfast! It is only 140 calories per slice. With only 20 minutes of hands on time you just can’t beat this spinach quiche recipe.

overhead view of a crustless spinach quiche recipe in a white quiche dish

If you are planning a Mother’s Day Brunch for your mom this weekend, well first of all: Good Job! Mom’s are truly the best humans, and they deserve all the love. Second, I think you should make her this delicious and easy spinach quiche.

It is my Crustless Vegetable Quiche recipe reimagined into a delicious spinach mushroom quiche that will always have brunch guests asking you for the recipe. It is simple to make, but the combination of flavors is perfect. Without a crust it comes in as a low calorie breakfast, which just means that you can have a muffin too.

How Do You Make Spinach Quiche Without Crust?

I love my crustless quiche recipes because they are so simple. They are basically three simple steps and once you get it down, you can mix up the ingredients.

  1. Sauté all of the vegetables. We want to cook the garlic, onion, and mushrooms, until they are nice and soft.
  2. Combine the egg mixture. Whisk together the eggs, milk, spices, and cheese until it is nice and smooth.
  3. Put it all together. Pour all the vegetables into the quiche pan and then top it with the egg mixture.
a piece of crustless spinach quiche on a white plate

Difference Between Frittatas and Crustless Quiches

Whenever I share my crustless quiche recipes, I get the inevitable question: Isn’t this just a frittata? It is not.

The beauty of a frittata is that you do a lot of the cooking on the stove top and throw it under the broiler. The stove top cooks the bottom of the frittata and the broiler cooks the top.

A quiche does all of the cooking in the oven. In this recipe, we sauté some vegetables on the stovetop. So in theory, you could add the eggs after the vegetables have been cooked and proceed with the frittata method. You could also add a crust to this recipe and make it a more traditional quiche.

What I Love About this Spinach Quiche

  • It’s easy! If you can sauté vegetables, you can make this quiche.
  • It doesn’t have a crust. This makes it easier, and fewer calories. A double win for me.
  • It’s low carb. This baby only has 5 grams of carbohydrates per slice!
  • It uses fresh spinach! 
  • It’s easy to customize. See our ideas for substitutions and variations below.
a spinach and mushroom quiche in a white quiche dish with a piece missing

Spinach Quiche Variations

Love this but want to mix it up a little?

  • Add some bacon before you start sautéing the veggies for a bacon spinach quiche.
  • Poor these in muffin tins (get tips from my Ham and Cheese Egg Muffin post) for mini spinach quiches.
  • Not in love with mushrooms? Leave them out and throw in some red peppers instead!
overhead view of two pieces of easy spinach quiche on white plates

Leftover Spinach and Mushroom Quiche

Left overs of this quiche recipe can be stored in the refrigerator for three to five days in a covered container. To reheat, cover and microwave for two minutes. You can reheat part or all of the quiche in the oven at 325 degrees for 20 minutes.

a spinach mushroom quiche in a white quiche dish with eggs in the background

FAQ

Isn’t this just a frittata?

Nope. If you want to read my thoughts on that and the difference between the two, scroll up.

Can I make a crust with this spinach quiche recipe?

Yes! Follow the instructions and baking time in our asparagus quiche recipe.

Can I Use a Different Cheese Besides Swiss?

Absolutely! If you don’t love Swiss Cheese, pick something that you do love. This would be amazing as a spinach feta quiche. Mozzarella would be another great option in this spinach and cheese quiche.

pice of crustless spinach quiche on a white plate with another piece in the background

What to Serve with this Quiche Recipe

This is such a great recipe if you are cooking for a crowd. It is simple and can be served warm or cold. Plus it is a great vegetarian option. If you are hosting and want more great brunch recipes that would pair well with this try:

If you make this Crustless Spinach Quiche or any of my other breakfast recipes, leave me a comment and let me know what you think.

a piece of crustless spinach quiche on a white plate
4.91 from 11 votes

Crustless Spinach Quiche

Serves: 8 servings
(tap # to scale)
Prep: 10 minutes
Cook: 52 minutes
Total: 20 minutes
This Crustless Spinach Quiche is the perfect light breakfast! It is only 140 calories per slice. With only 20 minutes of hands on time you just can’t beat this spinach quiche recipe.

Ingredients

  • 1 tablespoon extra virgin olive oil
  • 2 garlic cloves minced
  • 1/2 yellow onion diced small
  • 8 ounces mini portabella mushrooms sliced (white mushrooms could also be used)
  • 5 cups spinach
  • 4 large eggs
  • 4 egg whites
  • 3/4 cup swiss cheese
  • 3/4 cup milk (I used skim)
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper

Instructions

  • Preheat the oven to 350 degrees. Spray a nine inch quiche dish with cooking spray and set aside.
  • In a large skillet, heat the olive oil. Then add the garlic, onion, and mushrooms. Cook, sautéing until the mushrooms are soft. About 5 minutes.
  • Add in the spinach and stir until wilted. About two minutes. Remove from the heat and set aside.
  • In a large bowl whisk together the eggs, egg whites, milk, salt, pepper, and cheese.
  • Pour the vegetables into the quiche dish.  Add the egg mixture over the top.  Bake for 40 minutes or until the edges start to pull away from the side of the dish and the middle has just a slight jiggle to it.  
Calories: 143kcal (7%) Carbohydrates: 5g (2%) Protein: 10g (20%) Fat: 8g (12%) Saturated Fat: 3g (19%) Polyunsaturated Fat: 1g Monounsaturated Fat: 3g Cholesterol: 105mg (35%) Sodium: 300mg (13%) Potassium: 329mg (9%) Fiber: 1g (4%) Sugar: 3g (3%) Vitamin A: 2050IU (41%) Vitamin C: 8.3mg (10%) Calcium: 160mg (16%) Iron: 1.1mg (6%)
Author: Lisa Longley
Course: Breakfast
Cuisine: American

Video

a piece of crustless spinach quiche on a white plate

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Crustless Spinach Quiche

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Hi! I'm Lisa Longley, and I am committed to giving you simple dinner ideas and recipes that are easy to make; recipes that will fill your home with joy. I am the owner and author of SimpleJoy.com and I'm so glad that you are here.

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  1. Sara says

    5 stars
    We love this quiche!!! I’ve made it with a crust and without. Usually I add bacon. I do use grayer cheese because my husband doesn’t like Swiss. Thanks

    • Lisa Longley says

      I’m so happy that you like it!

  2. Joyce says

    My question disappeared. In your crustless spinach quiche can I use 8 eggs instead of 4 eggs and 4 gg whits? Thank you.

    • Lisa Longley says

      Hi Joyce! I have only made it with 4 eggs and 4 egg whites. If you use 8 eggs, I would suggest using a little more milk to balance it, and a little more seasoning. You will also need to bake it a little longer.

  3. Barbara says

    I decided to try this as it is crustless & a little healthier than normal quiche. It was absolutely awesome. And I’m embarrassed to say, but it was SO awesome, we ate the whole thing! The portobellos really are nice in this. I didn’t have enough swiss on hand, so I used a combination of swiss, gruyere & sharp white cheddar & also added a sprinkle of aji amarillo chili powder, which is my new favorite spice. Wonderful!

    • Lisa Longley says

      I’m so happy to hear that you liked it, Barbara!

  4. Rona says

    Since I am on keto, can I substitute heavy cream for the milk?

    • Lisa Longley says

      Yes, that will work fine.

  5. Tiff says

    Can you use frozen steamed spinach? (Like the 10 oz steamables bags?)

    • Lisa Longley says

      Yes, just make sure to squeeze out all the liquid

  6. Pam says

    It was easy to put together and baked beautifully. I wasn’t sure if my husband would like it. We both thought it was great. Love your recipes keep them coming

    • Lisa Longley says

      I’m so happy to hear that!

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