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 spinach and mushroom crustless quiche recipe a try the next time you want to prepare something special. I promise it’s worth the effort!

Originally posted 11/1/2011, updated 11/9/2021.

Isn’t a “crustless quiche” just a frittata?

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 only for the last few minutes in the oven. Quiches are baked in the oven only.

Can this crustless quiche be reheated?

Yes, this 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 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 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 Spinach Mushroom and Feta Crustless Quiche? Try my Bacon Broccoli Cheddar Crustless Quiche, too!

close up view of sliced spinach and mushroom crustless quiche in the pie dish

Spinach Mushroom and Feta Crustless Quiche

This easy, tasty Spinach Mushroom and Feta Crustless Quiche is low on carbs and big on flavor. This veggie-filled breakfast will keep you full and happy.

Total Cost $5.89 recipe / $0.98 serving

Prep Time 15 minutes

Cook Time 50 minutes

Total Time 1 hour 5 minutes

Servings slices

Calories 187kcal

Equipment

Ingredients

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.
Slice the mushrooms and 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!

Video

Nutrition

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.