I’m a big fan of savory breakfast dishes, and this Spinach and Mushroom Crustless Quiche might be my new favorite! It’s very filling, full of vegetables, and doesn’t leave me with a carb hangover (I’m looking at you, pancakes). You can serve it up at brunch or eat it for lunch or dinner, so give this recipe for crustless quiche a try the next time you want to prepare something special. I promise it’s worth the effort!
What is Crustless Quiche?
Isn’t a “crustless quiche” just a frittata? Nope! While they are both baked egg dishes, there are distinct differences. The main difference is the texture. Quiches are a custard made with egg, cheese, and milk or cream. They have a soft, delicate texture. Frittatas, on the other hand, contain little to no milk or cream, so it is closer in texture to an omelet or baked egg. The other significant difference comes in the cooking process. Frittatas start on the stovetop and only finish for the last few minutes in the oven. Quiches are baked in the oven only.
Can this crustless quiche be reheated?
Yes, this crustless quiche recipe is one of my favorite make-ahead breakfast dishes! But you do need to be cautious while reheating because overheating can cause the egg proteins to seize up, expel water, and become rubbery. For that reason, I suggest reheating in the microwave only until the crustless quiche is warmed through but not piping hot. This will store in the refrigerator for about 4 days.
Can You Freeze Quiche?
Egg dishes like crustless quiche freeze just so-so. This is one of those grey areas where it will depend a lot on how sensitive you are to texture changes. The egg in the crustless quiche will seep a little water upon freezing, thawing, and reheating, which may or may not bother you. I suggest testing this with one piece of the spinach crustless quiche first to see if the changes are acceptable to you. To freeze, cool the quiche in the refrigerator first, then wrap tightly in plastic and transfer to the freezer. Thaw in the refrigerator overnight before reheating.
Love this no crust quiche? Try my Bacon Broccoli Cheddar Crustless Quiche, too!
Spinach Mushroom and Feta Crustless Quiche
Servings 6 slicesIngredients
- 1 10oz. box frozen chopped spinach ($1.00)
- 8 oz. mushrooms ($1.49)
- 1 clove garlic, minced ($0.08)
- 1/8 tsp Salt ($0.01)
- 1 Tbsp cooking oil, divided ($0.04)
- 2 oz. feta cheese ($1.10)
- 4 large eggs ($0.83)
- 1/4 cup grated Parmesan ($0.44)
- 1/4 tsp pepper ($0.02)
- 1 cup milk ($0.42)
- 1/2 cup shredded mozzarella ($0.46)
Instructions
- Preheat the oven to 350ºF. Thaw and squeeze as much moisture out the spinach as possible.
- Rinse any dirt or debris from the mushrooms, then slice thinly. Mince the garlic.
- Add the mushrooms, garlic, salt, and a ½ Tbsp cooking oil to a skillet. Sauté the mushrooms over medium heat until they have released all of their moisture and it has evaporated from the skillet. No water should remain in the skillet.
- Brush the other ½ Tbsp cooking oil inside a 9-inch pie plate. Layer the mushrooms, spinach, and crumbled feta into the pie plate.
- In a large bowl, whisk together the eggs, Parmesan, pepper, and milk.
- Pour the egg mixture into the pie plate over the spinach, mushrooms, and feta. Top with the shredded mozzarella.
- Bake the crustless quiche in the preheated 350ºF oven for about 50 minutes, or until it is golden brown on top and the internal temperature reaches 160ºF. Slice and enjoy!
See how we calculate recipe costs here.
Nutrition
Video
How to Make Spinach and Mushroom Crustless Quiche – Step by Step Photos
Preheat the oven to 350ºF. Thaw one 10oz. block of frozen chopped spinach (I use the microwave), then squeeze out as much of the moisture as possible. The spinach should be fairly dry after squeezing, no water remaining in the bottom of the bowl.
Slice 8oz. of mushrooms and mince one clove of garlic.
Add the mushrooms to a skillet with ½ Tbsp cooking oil, one clove of minced garlic, and ⅛ tsp salt. Sauté the mushrooms until they release all of their moisture and it has evaporated off the bottom of the skillet.
Brush another ½ Tbsp cooking oil over the inside surface of a 9″ pie dish. Layer in the sautéed mushrooms, squeeze-dried spinach, and 2oz. crumbled feta.
Next, make the savory custard. Whisk together 4 large eggs, ¼ cup grated Parmesan, 1 cup milk, and ¼ tsp pepper.
Pour the custard mixture into the pie dish over the spinach, mushrooms and feat. Sometimes I like to use a larger baking tray to transport my pie plate in and out of the oven. I feel like it makes it a little easier to do without spilling, but that’s up to you.
Top the unbaked quiche with a little shredded mozzarella. You don’t need much, I only used about ½ cup or ¼ off an 8oz. block.
Bake the quiche in the preheated 350ºF oven for about 50 minutes, or until it’s golden brown on top or until the internal temperature reaches 160ºF.
Slice and serve warm!
(old photo from 2011 😊)
I used fresh grated Gruyère in the mix and added some bell peppers. Because I had two wet ingredients with mushrooms and peppers I reheated leftovers in the toaster oven, dried it out perfectly! This was delicious!
This is one yummy dish. I have replaced Mike with heavy whipping cream and it’s delicious. Watching carbs. By far best quiche.
This looks amazing. Would it be possible to assemble all ingredients in the baking dish, refrigerate overnight or for 1-2 days and bake prior to serving?
Thank you in advance!
I haven’t tried that, but it might work okay. The one thing that might be affected the most is the bake time since the whole thing will be very chilled after being in the refrigerator overnight. Maybe if you let it warm up just a bit before baking that might work better.
I love the sound of this but my favourite combination is spinach and ricotta, could I replace the feta?? xx
You could, just keep in mind that ricotta is far less salty than feta.
Hi,
I have made this recipe several times and I love it! My question is this: If I want to make it for a crowd, can I just double the recipe and use a 9 x 12 pan, or would I need a little bit bigger pan? Also, I assume it might need more time to cook?
Thanks!
You’ll definitely need a bit more time to cook, but unfortunately without testing a double batch I’m not sure what size dish you’d need or how long the bake time would be. The safest bet would be to make two of the normal size batches. They can bake at the same time without any adjustments.
In Australia 8oz (250gr) mushrooms costs minimum $6.25.
I just read that alternatives for mushrooms are tofu & zucchini. I’m not particularly fond of mushrooms, so I often switch them with something else.
This was simple and very tasty
This crustless quiche is OUTSTANDING.
I have been making it ever since I found the BUDGET BITES recipe. In fact it has become my signature Quiche. DELISH !!
Can fresh spinach be used instead of frozen? If so, how much fresh?
Hi Elaine- You can sub 10 ounces of frozen spinach with 1 pound of fresh spinach. I would cook it down before adding it to the quiche and, once cooled, squeeze as much water out as possible, before adding it to the recipe. xoxo -Monti
Delicious and flavorful. I like that I’ll be able to add other veggies on hand, as well. It’s a terrific base recipe!
Does it need to bake in a glass pan? (Crust less quiche)
Hi Leila,
No, it does not need to bake in a glass pan, but the timing will change a touch depending on the material of the pan you choose to bake it in. Just keep an eye on it. xoxo -Monti
Love this recipe! Very simple. I just add more veggies for flavor and fullness. Everyone that has tasted this has loved it and asked for the recipe!
My husband and I loved this!
Can’t stop making this quiche and mom and I can’t stop eating it. 😋
Basically stayed with the recipe and did not stray from it. It’s delicious 🤤
I made it today. It was delicious. Very easy. I can think of alot of variations.