Low Carb Crustless Mushroom Spinach Pie
There are some recipes that prove you really don’t need a crust to make a pie feel like comfort food.
This Low Carb Crustless Mushroom Spinach Pie is one of those recipes.
It’s creamy, cheesy, savory, and packed with tender mushrooms and spinach. The edges turn beautifully golden while the center stays soft and satisfying.
And because there’s no pastry crust, it’s wonderfully simple.
I made this recently on a weekend when I wanted something cozy for the family without making a complicated dinner.
I had mushrooms and spinach in the refrigerator, a few eggs, some cheese, and a little cream.
So I put everything together, popped it into the oven, and let it do its thing.
While it baked, the kitchen started smelling absolutely amazing.
The mushrooms became golden and savory, the cheese melted into the egg mixture, and the spinach added that lovely fresh flavor.
When I finally pulled it from the oven, everyone came into the kitchen to see what I’d made.
I let it rest for a few minutes before slicing it.
That first piece came out warm and creamy with golden edges.
And then came the best part.
Everyone loved it.
One slice became two, and suddenly I was wishing I’d made a second pie.
That’s usually how I know a recipe deserves a permanent place in my kitchen.
This is the kind of recipe I love having around for breakfast, lunch, dinner, or even meal prep.
It’s low carb, naturally filling, easy to customize, and doesn’t require a pastry crust to feel special.
❤️ Why You’ll Love This Crustless Mushroom Spinach Pie
Low in carbohydrates
No pastry crust required
Creamy and cheesy
Packed with mushrooms and spinach
Easy to prepare
Great for breakfast or dinner
Excellent for meal prep
Naturally vegetarian
Easy to customize
Delicious hot or cold
And those golden edges?
Definitely my favorite part.
🛒 Ingredients
For the Crustless Pie
8 ounces mushrooms, sliced
4 cups fresh baby spinach
6 large eggs
½ cup heavy cream
1 cup shredded mozzarella cheese
½ cup grated Parmesan cheese
2 cloves garlic, minced
1 tablespoon olive oil
½ teaspoon salt
½ teaspoon black pepper
½ teaspoon Italian seasoning
¼ teaspoon red pepper flakes, optional
¼ teaspoon nutmeg, optional
Optional Garnishes
Fresh parsley
Chives
Extra Parmesan
Cracked black pepper
A little feta cheese
🍄 What Kind of Mushrooms Should You Use?
Almost any mushrooms will work.
I usually reach for:
White button mushrooms
Cremini mushrooms
Baby bellas
You can also use a combination of mushrooms for a deeper flavor.
If you’re using larger mushrooms, slice them fairly thin so they cook evenly.
👩🍳 How to Make Low Carb Crustless Mushroom Spinach Pie
1. Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9-inch pie dish or similar baking dish.
You can also line the bottom with parchment paper for easier serving.
🍄 2. Cook the Mushrooms
Heat the olive oil in a large skillet over medium-high heat.
Add the sliced mushrooms.
Cook for approximately 5–7 minutes, stirring occasionally.
At first, the mushrooms will release quite a bit of moisture.
Keep cooking until that moisture evaporates and the mushrooms begin to turn golden.
This step is important.
If you add watery mushrooms directly to the egg mixture, the finished pie can become soggy.
🧄 3. Add the Garlic
Add the minced garlic to the mushrooms.
Cook for approximately 30–60 seconds, until fragrant.
Don’t let the garlic burn.
🥬 4. Add the Spinach
Add the fresh spinach to the skillet.
It may look like far too much at first.
Don’t worry.
Spinach shrinks dramatically as it cooks.
Stir for approximately 1–2 minutes, just until the spinach wilts.
Remove the skillet from the heat.
Let the vegetables cool for a few minutes.
🥚 5. Make the Egg Mixture
In a large bowl, whisk together:
Eggs
Heavy cream
Mozzarella
Parmesan
Salt
Black pepper
Italian seasoning
Nutmeg, if using
Red pepper flakes, if using
Whisk until everything is evenly combined.
🥣 6. Combine Everything
Add the cooked mushrooms and spinach to the egg mixture.
Stir gently until the vegetables are evenly distributed.
Taste a tiny bit of the mixture if desired and adjust the seasoning.
Remember that Parmesan already adds saltiness.
🥧 7. Fill the Pie Dish
Pour the mixture into your prepared pie dish.
Spread the mushrooms and spinach evenly so every slice gets plenty of vegetables.
Sprinkle a little extra Parmesan over the top if you like.
🔥 8. Bake
Place the pie in the preheated oven.
Bake for approximately 30–40 minutes.
The edges should be golden and the center should look set.
The middle can have a very slight jiggle when you remove it from the oven, but it shouldn’t look liquid.
Avoid overbaking.
The eggs can become rubbery if cooked for too long.
⏰ 9. Let It Rest
Remove the pie from the oven.
Let it rest for 5–10 minutes before slicing.
This gives the eggs time to finish setting and makes the pie much easier to cut.
🌿 10. Garnish and Serve
Sprinkle with:
Fresh parsley
Chives
Extra Parmesan
Freshly cracked black pepper
Then slice and serve.
It’s delicious warm, but it’s also wonderful at room temperature.
⭐ Tips for the Best Crustless Mushroom Spinach Pie
Cook the mushrooms properly
Don’t rush them.
Let their moisture cook out so the pie doesn’t become watery.
Don’t overcook the spinach
It only needs to wilt.
Squeeze frozen spinach very well
If using frozen spinach, thaw it completely and squeeze out as much water as possible.
Don’t overbake
The center should be just set.
Let it rest
A short resting period makes cleaner slices.
Use flavorful cheese
Parmesan adds a wonderful salty, nutty flavor.
🥬 Can I Use Frozen Spinach?
Absolutely.
Frozen spinach is a convenient substitute for fresh.
Use approximately 10 ounces frozen spinach, thawed completely.
The most important thing is to squeeze out as much excess water as possible.
I like to put the thawed spinach in a clean kitchen towel and squeeze firmly.
You’ll be surprised how much water comes out.
🧀 Cheese Variations
You don’t have to stick with mozzarella and Parmesan.
Try:
Cheddar
Swiss
Gruyère
Monterey Jack
Provolone
Goat cheese
Feta
Pepper Jack
A combination of mozzarella and feta is particularly delicious.
For a richer flavor, substitute Gruyère for some of the mozzarella.
🥓 Add Bacon
Crispy bacon makes an excellent addition.
Cook approximately 4–6 slices of bacon until crisp.
Crumble it and stir it into the mushroom and spinach mixture before adding everything to the eggs.
The salty bacon works beautifully with the creamy cheese and earthy mushrooms.
🍗 Add Chicken
For a heartier dinner, add cooked chicken.
Use:
Grilled chicken
Rotisserie chicken
Roasted chicken
Leftover chicken breast
Chicken thighs
About 1 cup chopped cooked chicken is plenty.
🌶️ Make It Spicy
If you enjoy a little heat, add:
Red pepper flakes
Cayenne pepper
Diced jalapeño
Pepper Jack cheese
Hot sauce
You can also sauté a little chopped jalapeño with the mushrooms.
🧄 Make It Extra Garlicky
For serious garlic lovers, increase the garlic to 3–4 cloves.
You can also add a teaspoon of garlic powder to the egg mixture.
Fresh garlic gives you the best flavor, though.
🧅 Add More Vegetables
This recipe is extremely flexible.
Try adding:
Diced bell peppers
Zucchini
Broccoli
Asparagus
Green onions
Tomatoes
Kale
Just remember that vegetables with a lot of water should be cooked first so they don’t make the pie watery.
🍅 Spinach Mushroom Tomato Pie
For a Mediterranean-inspired version, add:
Cherry tomatoes
Feta
Fresh oregano
Kalamata olives
Cook the tomatoes briefly first to remove some moisture.
🧀 Make a Feta Version
Replace half of the mozzarella with crumbled feta.
Add:
Fresh dill
Parsley
Black pepper
This gives the pie a delicious Mediterranean-style flavor.
🍳 Make It for Breakfast
This pie is fantastic for breakfast.
Serve a warm slice with:
Avocado
Fresh tomatoes
Turkey bacon
Sausage
Fresh fruit
You can bake it the night before and simply reheat slices in the morning.
🥗 Make It a Light Lunch
Pair a slice with a simple salad.
Try:
Mixed greens
Cucumber
Cherry tomatoes
Avocado
Olive oil
Lemon juice
The fresh salad balances the creamy richness of the pie.
🍽️ Make It Dinner
For a more substantial dinner, serve it alongside:
Roasted chicken
Grilled steak
Salmon
Grilled shrimp
Roasted vegetables
Green beans
Cauliflower mash
One slice plus a fresh salad can make a surprisingly satisfying dinner.
🥑 Low-Carb Topping Ideas
Keep the toppings low carb with:
Avocado
Sour cream
Greek yogurt
Fresh herbs
Salsa
Sliced jalapeños
Feta
Crispy bacon
A spoonful of sour cream and a sprinkle of chives is simple and delicious.
🧊 Can I Make This Ahead?
Yes.
You can prepare the vegetable mixture ahead of time and refrigerate it.
You can also bake the entire pie ahead of time.
Let it cool, cover it, and refrigerate.
When you’re ready to serve, gently reheat it in the oven.
🧊 How to Store Leftovers
Allow the pie to cool appropriately.
Transfer leftovers to an airtight container or cover the pie tightly.
Refrigerate for up to 3–4 days.
It’s one of those recipes that makes weekday breakfasts and lunches much easier.
🔥 How to Reheat
For the best texture, reheat individual slices in the oven or toaster oven.
Heat at approximately 325°F (165°C) until warmed through.
You can also microwave a slice in short intervals.
Don’t overheat it, or the eggs may become tough.
❄️ Can You Freeze Crustless Spinach Pie?
Yes.
Let the pie cool completely.
Cut it into individual slices and wrap them well.
Place the slices in a freezer-safe container or bag.
Freeze for up to 2–3 months for best quality.
Thaw overnight in the refrigerator before reheating.
The texture may be slightly softer after freezing, but it still makes a convenient make-ahead meal.
❓ Frequently Asked Questions
Why is my crustless pie watery?
The most common reason is excess moisture from mushrooms or spinach. Cook mushrooms until their moisture evaporates and squeeze frozen spinach very well.
Can I use frozen spinach?
Yes. Thaw it completely and squeeze out as much liquid as possible.
Can I use different mushrooms?
Absolutely. Button, cremini, baby bella, shiitake, and mixed mushrooms can all work.
Can I use milk instead of heavy cream?
Yes, although heavy cream gives the pie a richer and creamier texture. Whole milk can be used for a lighter version.
Can I make this without cream?
Yes. Use whole milk or half-and-half, or increase the amount of cheese slightly for richness.
Can I make this dairy-free?
Yes. Use an unsweetened dairy-free milk or cream alternative and dairy-free cheese substitutes.
Can I make this vegetarian?
Yes. The basic recipe is vegetarian.
Can I add meat?
Definitely. Bacon, sausage, chicken, ham, or cooked turkey are all good additions.
Can I make this keto?
The ingredients are generally compatible with a low-carb or keto-style approach, but the exact carbohydrate content depends on the specific ingredients and brands used. Check nutrition labels if you are tracking carbohydrates closely.
Can I use another baking dish?
Yes. A similar-sized round or square baking dish will work. Cooking time may change depending on the depth of the mixture.
How do I know when it’s done?
The edges should be golden and the center should be set with only a slight jiggle.
Why did my pie become rubbery?
It was likely overbaked. Remove it as soon as the center is set.
Can I eat it cold?
Yes. It’s delicious cold or at room temperature, making it convenient for meal prep.
Can I make mini versions?
Absolutely. Divide the mixture among greased muffin tins and bake until the centers are set.
Can I add herbs?
Yes. Parsley, chives, thyme, basil, oregano, and dill all work beautifully.
📝 Recipe at a Glance
Recipe: Low Carb Crustless Mushroom Spinach Pie
Prep Time: 15 minutes
Cook Time: 30–40 minutes
Total Time: About 55 minutes
Servings: 6
Category: Breakfast / Lunch / Dinner
Cuisine: American-inspired
Method: Oven
Ingredients
8 ounces sliced mushrooms
4 cups fresh baby spinach
6 large eggs
½ cup heavy cream
1 cup shredded mozzarella
½ cup grated Parmesan
2 cloves garlic
1 tablespoon olive oil
½ teaspoon salt
½ teaspoon black pepper
½ teaspoon Italian seasoning
¼ teaspoon red pepper flakes, optional
¼ teaspoon nutmeg, optional
Instructions
Preheat oven to 375°F (190°C).
Grease a 9-inch pie dish.
Sauté mushrooms in olive oil for 5–7 minutes until golden and their moisture has evaporated.
Add garlic and cook for 30–60 seconds.
Add spinach and cook until wilted.
Remove vegetables from heat and cool slightly.
Whisk eggs, cream, mozzarella, Parmesan, and seasonings together.
Stir in the mushrooms and spinach.
Pour into the prepared pie dish.
Sprinkle with additional Parmesan if desired.
Bake for 30–40 minutes, until the center is set.
Rest for 5–10 minutes.
Garnish with fresh herbs.
Slice and serve.
❤️ A Simple Pie That Doesn’t Need a Crust
I think that’s what I love most about this recipe.
It doesn’t try to be complicated.
It doesn’t need a pastry crust.
It doesn’t need a dozen ingredients.
It just takes mushrooms, spinach, eggs, cheese, and a few simple seasonings and turns them into something that feels genuinely comforting.
When I made it for my family, I expected it to be a nice little weekend meal.
Instead, everyone loved it.
The golden edges disappeared first.
Then the creamy middle.
And before I knew it, there was one lonely little slice left on the plate.
I probably should have saved it for lunch.
I didn’t.
That’s the thing about recipes like this.
They’re simple enough to make when you’re tired, but good enough that you don’t feel like you’re settling.
Make it for breakfast.
Make it for a lazy weekend lunch.
Make it for dinner with a crisp salad.
Or bake it on Sunday and keep slices in the refrigerator for busy mornings during the week.
However you serve it, this Low Carb Crustless Mushroom Spinach Pie is proof that comfort food doesn’t always need a crust.
Sometimes all you need are tender vegetables, creamy eggs, plenty of cheese, and a little time in the oven.
Simple, savory, satisfying—and exactly the kind of homemade recipe I love coming back to.