If you’re on the hunt for a deliciously satisfying dish that’s perfect for breakfast, brunch, or even a light dinner, look no further than this Crustless Mushroom Quiche. Packed with flavor from sautéed mushrooms, savory ground beef, and a creamy egg mixture, this quiche is not only easy to make but also a fantastic way to sneak in some veggies. Plus, the best part? It’s crustless, making it a lighter option without sacrificing any of the taste. So, grab your apron, and let’s get cooking!
Why You’ll Love This Recipe

This Crustless Mushroom Quiche is a versatile dish that can be enjoyed any time of day. Here are just a few reasons why you’ll fall in love with it:
- Easy to Make: With simple steps and minimal prep, this quiche comes together quickly.
- Customizable: Feel free to swap in your favorite veggies or cheeses!
- Healthy Ingredients: Packed with protein and nutrients, this dish is a great way to start your day.
- One-Pan Wonder: Everything cooks in one dish, making cleanup a breeze.
What’s in the Bowl
To create this delicious Crustless Mushroom Quiche, gather the following ingredients:
- 1 lb ground beef
- 8 oz white mushrooms, sliced
- 2 green onions, thinly sliced (greens only)
- 1 cup Swiss cheese, shredded
- 1 handful of spinach, chopped
- 10 eggs
- 1 ½ cups heavy cream
- 1 cup whole milk
- ½ tsp sea salt
- Cracked pepper to taste
- 1 tsp crushed red pepper (optional)
What You’ll Need (Gear)
Before you start cooking, make sure you have the right tools on hand:
- Large skillet: For browning the ground beef and sautéing the mushrooms.
- Mixing bowl: To whisk together the egg mixture.
- Whisk: For blending the eggs and cream smoothly.
- 9-inch pie dish or baking dish: To bake your quiche in.
- Spatula: For mixing and serving.
Cook Crustless Mushroom Quiche Like This

Step 1: Preheat Your Oven
Start by preheating your oven to 350°F (175°C). This will ensure that your quiche cooks evenly.
Step 2: Cook the Ground Beef
In a large skillet over medium heat, add the ground beef. Cook it until browned and fully cooked through, breaking it up with a spatula as it cooks. Drain any excess fat and set the beef aside.
Step 3: Sauté the Mushrooms
In the same skillet, add the sliced mushrooms. Sauté them until they are tender and have released their moisture, about 4-5 minutes. Add the chopped spinach and cook for an additional 1-2 minutes until wilted. Remove the skillet from heat.
Step 4: Prepare the Egg Mixture
In a large mixing bowl, whisk together the eggs, heavy cream, whole milk, sea salt, cracked pepper, and crushed red pepper (if using). Mix until smooth.
Step 5: Combine Ingredients
Add the cooked ground beef, sautéed mushrooms, and spinach to the egg mixture. Stir in the shredded Swiss cheese and green onion greens, ensuring everything is evenly distributed.
Step 6: Pour and Bake
Pour the mixture into a greased 9-inch pie dish or baking dish. Bake in the preheated oven for 35-40 minutes, or until the quiche is set and lightly golden on top. A knife inserted in the center should come out clean.
Step 7: Cool and Serve
Once baked, remove the quiche from the oven and allow it to cool for about 10 minutes. This will make slicing easier. Serve warm or at room temperature, and enjoy every savory bite!
Seasonal Twists

This Crustless Mushroom Quiche is incredibly versatile. Here are some seasonal twists you might enjoy:
- Spring: Add fresh asparagus or peas for a bright touch.
- Summer: Incorporate zucchini or bell peppers for a colorful addition.
- Fall: Try adding sautéed butternut squash or roasted sweet potatoes.
- Winter: Kale or collard greens can add a hearty element to your quiche.
What Not to Do
To ensure your Crustless Mushroom Quiche turns out perfectly, keep these tips in mind:
- Don’t skip the sautéing step for the mushrooms; it enhances their flavor and texture.
- Avoid overcooking the beef; it should be browned but not dry.
- Do not rush the cooling time; letting it sit will help the quiche set better.
- Be cautious with salt; the cheese can be salty, so taste as you go.
Storing, Freezing & Reheating
If you find yourself with leftovers (or if you want to make this ahead of time), here’s how to store and reheat your Crustless Mushroom Quiche:
- Storing: Keep in an airtight container in the refrigerator for up to 4 days.
- Freezing: Wrap individual slices tightly in plastic wrap and store in a freezer-safe container for up to 2 months.
- Reheating: To reheat, bake in a 350°F (175°C) oven for about 15-20 minutes or until warmed through. You can also microwave slices for 1-2 minutes on high.
FAQ
Can I make this quiche without meat?
Absolutely! You can simply omit the ground beef or replace it with a plant-based protein or additional vegetables for a vegetarian option.
How do I know when the quiche is done?
The quiche is done when it is set in the middle and lightly golden on top. A knife inserted in the center should come out clean.
Can I use different types of cheese?
Yes! Feel free to experiment with different cheeses such as cheddar, feta, or mozzarella for a twist on flavor.
Is this quiche gluten-free?
Yes, since this is a crustless quiche, it is naturally gluten-free. Just be sure to check the labels on your cheese and any other packaged ingredients for gluten content.
One Pan, More Ideas
If you love the idea of one-pan meals, here are some more ideas to try:
- One-Pan Chicken and Vegetables
- One-Pan Sweet Potato Black Bean Tacos
- One-Pan Italian Chicken and Rice
- Creamy One-Pot Pasta
In Closing
This Crustless Mushroom Quiche is a delightful dish that brings comfort and flavor to your table. It’s perfect for any occasion, whether you’re hosting a brunch or simply treating yourself to a hearty meal. With its creamy texture and savory ingredients, this quiche is sure to become a staple in your recipe repertoire. So gather your ingredients, follow the steps, and enjoy the wonderful flavors of this delicious dish!

Crustless Mushroom Quiche
Ingredients
- 1 lb ground beef
- 8 oz white mushrooms, sliced
- 2 pieces green onions, thinly sliced (greens only)
- 1 cup Swiss cheese, shredded
- 1 handful spinach, chopped
- 10 pieces eggs
- 1.5 cups heavy cream
- 1 cup whole milk
- 0.5 tsp sea salt
- Cracked pepper to taste
- 1 tsp crushed red pepper (optional)
Instructions
- Start by preheating your oven to 350°F (175°C). This will ensure that your quiche cooks evenly.
- In a large skillet over medium heat, add the ground beef. Cook it until browned and fully cooked through, breaking it up with a spatula as it cooks. Drain any excess fat and set the beef aside.
- In the same skillet, add the sliced mushrooms. Sauté them until they are tender and have released their moisture, about 4-5 minutes. Add the chopped spinach and cook for an additional 1-2 minutes until wilted. Remove the skillet from heat.
- In a large mixing bowl, whisk together the eggs, heavy cream, whole milk, sea salt, cracked pepper, and crushed red pepper (if using). Mix until smooth.
- Add the cooked ground beef, sautéed mushrooms, and spinach to the egg mixture. Stir in the shredded Swiss cheese and green onion greens, ensuring everything is evenly distributed.
- Pour the mixture into a greased 9-inch pie dish or baking dish. Bake in the preheated oven for 35-40 minutes, or until the quiche is set and lightly golden on top. A knife inserted in the center should come out clean.
- Once baked, remove the quiche from the oven and allow it to cool for about 10 minutes. This will make slicing easier. Serve warm or at room temperature, and enjoy every savory bite!
Equipment
- Large Skillet
- Mixing Bowl
- Whisk
- 9-inch pie dish or baking dish
- Spatula
Notes
- Feel free to swap in your favorite veggies or cheeses for customization.
- Store leftovers in an airtight container in the fridge for up to 4 days.
- To freeze, wrap individual slices tightly and store in a freezer-safe container for up to 2 months.
