Crustless Zucchini Quiche Recipe (Easy!)

Free: Healthy Freezer Meals Recipe Ebook

This post may contain affiliate links, which help keep this content free. (Full disclosure)

Table Of Contents show

This crustless zucchini quiche recipe is bursting with summery flavor, thanks to tender slices of zucchini nestled into fluffy, seasoned, cheesy eggs. Just like with Instant Pot crustless quiche or spinach quiche, there’s no need to fuss with dough for this quiche with zucchini — just pour and bake!

Why You’ll Love This Zucchini Quiche Recipe

Rich veggie and cheese flavor
Fluffy, tender texture
No pie crust needed
10 minutes prep, then hands-off cooking
Naturally low in carbs and gluten-free
Perfect summer dish any time of day

Overhead view of zucchini quiche with slices taken out.

Ingredients You’ll Need

This section explains how to choose the best ingredients for zucchini crustless quiche, what each one does in the recipe, and substitution options. For measurements, see the recipe card below.

Olive Oil – Use your favorite extra-virgin variety, or any neutral cooking oil.
Onion – Yellow or white onions work best in this recipe.
Zucchini – Obviously a must to call it zucchini quiche, but yellow squash would also work the same way.
Dried Basil – You could also use dried oregano, or store-bought or homemade Italian seasoning mix. If you want to use fresh herbs, use one tablespoon fresh to replace each teaspoon dried.
Garlic – The flavor of fresh garlic tastes best, but you can also use jarred garlic for convenience.
Eggs – Use whole, large eggs.
Heavy Cream – You can also use half and half, or alternative milks such as almond milk or hemp milk.
Salt & Pepper
Cheese – I used a combination of shredded cheddar and mozzarella cheese. Parmesan cheese would also work well!

How To Make Crustless Zucchini Quiche

This section shows how to make zucchini quiche crustless, with step-by-step photos and details about the technique, to help you visualize it. For full instructions, including amounts and temperatures, see the recipe card below.

Saute onions. Heat oil in a large skillet over medium heat, then add onions. Cook until translucent.
Cook zucchini. Add zucchini and season with basil. Increase heat and cook, stirring occasionally, until squash is soft and beginning to brown.

Onions cooking with sliced zucchini in a pan.

Add garlic. Make a well in the center of the vegetables and add garlic (and more oil if needed). Saute until fragrant, then stir into zucchini and onions.
Transfer. Add half of the zucchini mixture to a 9-inch pie plate. Layer half the cheese over the top. Layer on the remaining zucchini, followed by remaining cheese.

TIP: No pie plate?

You can also bake this quiche in an 8×8″ square baking pan. Cooking time will remain the same.

Zucchini layered with cheese in a pie plate.

Whisk. In a large bowl, whisk together eggs, cream, salt, and pepper. Pour the egg mixture onto the zucchini in the pan.
Bake. Bake the zucchini quiche until the eggs are set.

Fully baked zucchini quiche in pie plate.

Variations

Use different veggies – Swap 1 of the zucchini with 1 to 1.5 cups of sliced mushrooms, or 5-6 ounces of fresh or frozen spinach. (If using frozen spinach, thaw and squeeze out moisture first. You can saute it if you like.)
Add a crust – Use your favorite savory pie crust and parbake it first. I like almond flour pie crust or coconut flour pie crust, but any kind you like will work. You’ll need to reduce the number of eggs and cream a bit so that the filling fits.

Storage Instructions

Store: Keep leftovers covered in an airtight container in the fridge for 3 to 4 days.
Meal prep: Sauté all veggies ahead of time, then assemble when ready to bake.
Reheat: You can warm up individual slices in the microwave, or reheat the entire quiche in the oven at 350 degrees F, until warm.

Can You Freeze Zucchini Quiche?

Zucchini quiche recipes can freeze for 2-3 months. Simply cool completely, wrap tightly, and freeze. Thaw in the fridge overnight, then reheat according to the instructions above.

Slice of crustless zucchini quiche on a plate with zucchini in background.

What To Serve With Crustless Zucchini Quiche

This quiche would pair well with a variety of brunch recipes! Give these favorites a try.

More Healthy Zucchini Recipes

I have dozens of healthy zucchini recipes for every meal! Try these delicious ideas next:

Baked zucchini casserole in a pan with a wooden spoon.

Tools To Make Crustless Quiche With Zucchini

Nonstick Skillet – One of my favorite all-purpose pans, and so easy to clean.
Glass Pie Pan – The perfect size for this savory pie. Dishwasher safe!

Crustless Zucchini Quiche Recipe

Pin It For Later!

Leave a Review or Question Cancel reply

10 Comments

Linda
0 September 18, 2023Reply

This was very good quiche! I didn’t have any mozzarella so it was all cheddar and I didn’t have anything but milk in the house. It was still amazing. Can’t imagine what it will taste like with heavy cream or half n half. This is a keeper!
Heather Mussara
0 April 12, 2023Reply

So delicious! Quick & easy and the whole family loved it.
DENNIS ALEBRANDE
0 January 16, 2023Reply

Quick easy taste delicious carb friendly what more do you need…
Lisa Hill
0 January 1, 2023Reply

I made this with the crust. My husband who is not following keto also loved it!
I used minced garlic instead of fresh. It was delicious.
Katy
0 September 18, 2022Reply

What temp do you bake it on and for how long?
- Wholesome Yum D
  0 September 20, 2022Reply
  
  Hi Katy, Bake at 350 for 30-35 minutes. You can find the full instructions in the recipe card.
Kristyn
0 August 10, 2022Reply

This has everything I love about quiche! It’s cheesy, flavorful, hearty, & easy!! Great for breakfast, lunch, or dinner!
Jessica
0 August 10, 2022Reply

Incredible! I had zucchini I wanted to use up and this turned out perfectly for a hearty meal. Thank you!
Shari H
0 August 10, 2022Reply

I make this all the time, it’s my favorite!! Perfect for meal prep!
Mackenzie
0 August 9, 2022Reply

I made this for brunch and it was a big hit.