Keto Crustless Zucchini Quiche Recipe (2024)

A crustless zucchini quiche is a delicious way to utilize an abundance of summer zucchini. This vegetarian quiche is very low carb so it's perfect for keto diets, too.

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Keto Crustless Zucchini Quiche Recipe (1)

At first, I was leary of using zucchini in a quiche because I thought it might be watery. I was wrong. It's amazing! The rich custard filling, delicate zucchini flavor, herbs, and mellow saltiness from the smoked gouda cheese is winning combination. And, ditching the crust means this recipe is low carb!

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What’s best? Sliced Zucchini or Grated Zucchini for Quiche?

You’ll see zucchini quiche recipes made with sliced zucchini and grated zucchini. After testing this recipe both ways, I found that grated zucchini works much better in this crustless zucchini quiche. Why?

  • Grated zucchini is easy to squeeze dry
  • Grated zucchini is easy to layer
  • Zucchini rounds release a lot of water in the quiche, even when salted and patted dry
  • Zucchini rounds need to be sauteed before adding to the quiche or they don't cook completely
  • Zucchini rounds sink to the bottom of the quiche

The Perfect Quiche Ingredient Ratio

The perfect egg-cream-cheese ratio for a quiche is ¼ cup of cream and 1 ounce of cheese for each egg. Because zucchini contains so much water, it was important to change the ratio for this zucchini quiche custard. Adding an extra egg and a little more cheese while decreasing the amount of heavy cream did the trick!

Keto Crustless Zucchini Quiche Recipe (2)

The Perfect Low Carb Crustless Zucchini Quiche

As far as low carb keto quiches go, this is an easy one. But for the best results you must grate the zucchini and remove as much water as you can. Don't worry, it's a piece of cake:

Grate one pound of zucchini and put it into a colander in the sink. Mix salt into the zucchini and let it sit for several minutes (the salt draws water out of the zucchini). Rinse the zucchini well to remove the excess salt. Then, using clean hands, squeeze out as much liquid as you can from the zucchini.

Then, go on to make the quiche but don't forget to layer the ingredients!

Layer Your Quiche Ingredients

Want the best quiche? Do me a favor... Layer. The. Ingredients. Layering the ingredients prevents heavier ingredients from sinking to the bottom and ensures even distribution.

Sprinkle a quarter of the cheese into a quiche dish or a pie plate. Layer roughly one third of the ingredients into the pie plate followed by another layer of cheese. Repeat twice more. Pour the frothy egg mixture over the layers and bake.

To refrigerate, allow your zucchini quiche to cool completely and cover with cling film. Reheat a slice of quiche in the microwave or in the oven. Serve with a green salad or this refreshing sweet bell pepper salad.

Refrigerate up to 1 week or freeze for up to 3 months.

Keto Crustless Zucchini Quiche Recipe (3)

Customize your quiche!

I love this zucchini quiche as written, but I did experiment with other seasoning combinations. In one variation I added two teaspoons of my homemade ranch seasoning. While the quiche was delicious and VERY FLAVORFUL, I felt like the zucchini's delicate flavor was lost. However, if you aren’t a huge fan of zucchini, this may be a great option for you!

Here are some ideas for customization:

  • add 2 teaspoons of ranch seasoning or lemon pepper
  • try adding basil or parsley
  • use green onions instead of chives
  • add crumbled bacon or chopped ham for more protein
  • try topping the zucchini quiche with crumbled feta cheese or dollops of ricotta cheese
  • add a flaky low carb pie crust

Other Great Low Carb Keto Vegetarian Quiche Recipes

Low carb vegetarian recipes are sometimes hard to find. Quiche is great because it benefits from the protein contributed from the eggs and cheese. Plus, it looks so nice on a plate. Here are three more great low carb vegetarian recipes.

  1. Crustless Mushroom Quiche
  2. Spinach and Mushroom Quiche
  3. Zucchini gratinby my friend Mellissa at I Breathe I’m Hungry.

Keto Crustless Zucchini Quiche Recipe (4)

Crustless Zucchini Quiche Recipe

This Zucchini quiche promises rich custard filling, delicate zucchini flavor, herbs, and mellow saltiness from smoked gouda cheese - a winning combination!

Print Pin Rate

Course: Breakfast, Dinner

Cuisine: American

Prep Time: 20 minutes minutes

Cook Time: 50 minutes minutes

Total Time: 1 hour hour 10 minutes minutes

Servings: 6

Calories: 314kcal

Author: Kim Hardesty

Ingredients

  • 1 pound grated zucchini
  • ½ teaspoon salt
  • 6 large eggs
  • 1 cup heavy cream
  • 8 oz smoked gouda cheese (or add ⅛ - ¼ teaspoon liquid smoke)
  • 2 tablespoon snipped fresh chives
  • ½ teaspoon dried dill
  • ¼ teaspoon salt
  • ¼ teaspoon white pepper
  • 2 teaspoon soft butter

Instructions

Preparation

  • Place the zucchini in a colander and sprinkle with ½ teaspoon salt. Thoroughly mix salt into zucchini with your hands. Let sit for 10 minutes. Grate the cheese.

  • Preheat oven to 350 F and set rack to middle position. Butter a 9 - 10 inch pie plate or quiche dish.

Method

  • Rinse the zucchini with running water very thoroughly. With clean hands, squeeze out as much liquid from the zucchini as you can. Place the zucchini into a medium bowl and mix well with the dried dill and chives.

  • Measure salt, pepper, eggs and heavy cream into a medium bowl and beat until frothy.

  • Layer ¼ of the cheese into the pie plate followed with ⅓ of the zucchini. Alternate layering cheese and zucchini until used up. Gently pour the egg mixture over the quiche.

Bake

  • Bake for 40-50 minutes depending on you oven or until the quiche is browned and just slightly soft in the middle. Remove from the oven and let cool to room temperature before serving.

  • Cover with cling film and refrigerate any leftovers. Reheat in the microwave or oven. Great served with a green salad.

  • Serve warm with a green salad. Serves 6 at 4.1g NET CARBS per serving.

Nutrition

Calories: 314kcal | Carbohydrates: 5g | Protein: 14g | Fat: 27g | Cholesterol: 291mg | Sodium: 577mg | Fiber: 0.9g | Sugar: 1.75g

Keto Crustless Zucchini Quiche Recipe (5)

Spinach and Mushroom - Vegetable Quiche

Keto Crustless Zucchini Quiche Recipe (6)

Broccoli Cheddar Quiche with Bacon

Keto Crustless Zucchini Quiche Recipe (7)

Low Carb Spinach Feta Quiche

Keto Crustless Zucchini Quiche Recipe (2024)

FAQs

Is heavy cream better than milk 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.

What can I use in quiche instead of heavy cream? ›

Use half-and-half as a 1:1 substitute for heavy cream. It can work nearly as well for bringing creamy texture and flavor to sauces, soups and stews, mashed potatoes, quiches, and casseroles. In a pinch, it can even be used for whipping. While you won't get stiff peaks, you can build volume if you work quickly.

What is a French crustless quiche called? ›

IS A FRITTATA THE SAME AS A CRUSTLESS QUICHE? The difference between a frittata and a quiche is about more than just the crust. A frittata is partially cooked in a skillet on the cooktop then finished in the oven. It also has a lower egg to dairy ratio making it closer to an open faced omelet than a pie.

How many carbs are in a crustless quiche Lorraine? ›

Asda Crustless Quiche Lorraine (1 quiche) contains 25.8g total carbs, 21g net carbs, 26g fat, 15.6g protein, and 386 calories.

Why is my crustless quiche soggy? ›

"Some vegetables, such as sliced large tomatoes or raw zucchini, have a high water content and will make your quiche soggy (even if you follow all steps to avoid this!)," Davila notes. Instead, he recommends roasting vegetables such as mushrooms or eggplant before adding them to your egg mixture.

What is the best cheese to use for quiche? ›

You can use any shredded cheese you like; one winning combination is havarti, colby, and Parmesan. Quiche is an excellent choice for any meal, including a busy weeknight dinner. It can even be prepared in advance and refrigerated or frozen, then quickly reheated.

What is a substitute for 1 cup of heavy cream? ›

If you have butter and milk (whole milk or even half-and-half work best), you can make your own heavy cream substitute. To make 1 cup of heavy cream, melt 1/4 cup of butter and slowly whisk in 3/4 cup milk. This works for most baking or cooking recipes that require heavy cream, but it will not whisk into stiff peaks.

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)

Can you substitute almond milk for heavy cream in quiche? ›

Eggs: the base of any quiche is eggs, so we're keeping things traditional there. Almond milk: instead of cream/milk, we're swapping with unsweetened almond milk. I think you could also add a bit of cashew cream if you're wanting to make it a tiny bit richer.

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.

Who sells crustless quiche? ›

Waitrose Ham & Cheese Crustless Quiche340g

Free range eggs and cream with the classic cheese and ham pairing, without a crust. A perfect quiche to serve at summer picnics or for lunch.

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

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. Pan: Quiche is baked in pie dish or tart pan, while a frittata is cooked in a skillet.

Is quiche full of carbs? ›

Quiche, with meat (1 piece - 1/8 of 9" pie) contains 16g total carbs, 15.3g net carbs, 22.4g fat, 14g protein, and 325 calories.

How many carbs are in a Costco mini quiche? ›

Nutrition facts
% Daily Value*
Total Carbohydrate 21g8%
Dietary Fiber 1g4%
Total Sugars 2g
Includes 0g Added Sugars0%
12 more rows

Does quiche have a lot of carbs? ›

The favorite choice for the term "Quiche" is 1 individual quiche of Quiche with Meat, Poultry or Fish which has about 16 grams of carbohydrate. The total carbohyrate, sugar, fiber and estimated net carbs (non-fiber carbs) for a variety of types and serving sizes of Quiche is shown below.

Can you substitute heavy cream for milk in quiche? ›

Long story short, YES. You can use heavy whipping cream to replace half and half and/or milk in a recipe.

Can you replace heavy cream with milk in quiche? ›

The answer is, yes you can, which is a relief. You do need some fat in there to help it set, but you can get that from the cheese. Using just milk and eggs as the basis for the filling works perfectly well and I figure you are more likely to have these ingredients in, which is way more helpful.

Is it better to bake with milk or heavy cream? ›

Whole milk is a good choice for general cooking and baking, as it adds richness and flavor without being too heavy. Heavy cream and heavy whipping cream are best for recipes that require a thick and creamy texture, or for making whipped cream.

Is milk or heavy cream better for eggs? ›

What about a splash of milk or cream? This can give you more leeway when quick-cooking eggs and help keep the eggs softer, but isn't really necessary with our slow-cooked version. Even so, I still like the touch of velvety richness a tablespoon of heavy cream adds to the eggs.

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