Spinach & Mushroom Quiche


This healthy vegetarian quiche recipe is as simple as it gets. It's a quiche without the fussy crust! It's filled with sweet wild mushrooms and savory Gruyère cheese. Enjoy it for breakfast or brunch, or serve it with a light salad for lunch.

Active Time:
25 mins
Total Time:
1 hr 5 mins
1 quiche

Nutrition Notes

1) We loaded our quiche with 8 cups of spinach and 8 ounces of fresh mixed mushrooms. More veggies mean more fiber and nutrients.

2) We used a combination of whole milk and half-and-half instead of heavy cream in the custard. You get the same creamy results with less saturated fat.

3) We went crustless! A crustless quiche is not only more streamlined but healthier too. Leaving the crust behind cuts down on saturated fat and leaves more room for the nutritious (and delicious) filling. It also cuts down on prep time so that you can enjoy your homemade quiche much faster.

Can I Use Frozen Spinach Instead of Fresh?

Yes, you can! Frozen spinach is a good alternative to fresh as long as it is thawed and squeezed dry. Wet and watery ingredients will leave you with a wet and watery quiche, which is why we pre-cook the veggies before baking them in the custard. Be sure to squeeze dry or pre-cook any frozen or fresh veggies before adding them to the custard.

How to Store Spinach & Mushroom Quiche

Quiche can easily be made ahead of time or enjoyed as leftovers. To make Spinach & Mushroom Quiche ahead, cover and refrigerate for up to 5 days. Cover and reheat whole quiche at 350°F for 30 to 45 minutes or microwave by the slice.

Additional reporting by Hilary Meyer


  • 2 tablespoons extra-virgin olive oil

  • 8 ounces sliced fresh mixed wild mushrooms such as cremini, shiitake, button and/or oyster mushrooms

  • 1 ½ cups thinly sliced sweet onion

  • 1 tablespoon thinly sliced garlic

  • 5 ounces fresh baby spinach (about 8 cups), coarsely chopped

  • 6 large eggs

  • ¼ cup whole milk

  • ¼ cup half-and-half

  • 1 tablespoon Dijon mustard

  • 1 tablespoon fresh thyme leaves, plus more for garnish

  • ¼ teaspoon salt

  • ¼ teaspoon ground pepper

  • 1 ½ cups shredded Gruyère cheese


  1. Preheat oven to 375 degrees F. Coat a 9-inch pie pan with cooking spray; set aside.

  2. Heat oil in a large nonstick skillet over medium-high heat; swirl to coat the pan. Add mushrooms; cook, stirring occasionally, until browned and tender, about 8 minutes. Add onion and garlic; cook, stirring often, until softened and tender, about 5 minutes. Add spinach; cook, tossing constantly, until wilted, 1 to 2 minutes. Remove from heat.

  3. Whisk eggs, milk, half-and-half, mustard, thyme, salt and pepper in a medium bowl. Fold in the mushroom mixture and cheese. Spoon into the prepared pie pan. Bake until set and golden brown, about 30 minutes. Let stand for 10 minutes; slice. Garnish with thyme and serve.

    Spinach & Mushroom Quiche

Nutrition Facts (per serving)

277 Calories
20g Fat
7g Carbs
17g Protein
Nutrition Facts
Servings Per Recipe 6
Serving Size 1 slice
Calories 277
% Daily Value *
Total Carbohydrate 7g 2%
Dietary Fiber 2g 5%
Total Sugars 3g
Protein 17g 34%
Total Fat 20g 26%
Saturated Fat 8g 41%
Cholesterol 220mg 73%
Vitamin A 2127IU 43%
Vitamin C 11mg 12%
Folate 39mcg 10%
Sodium 443mg 19%
Calcium 358mg 28%
Iron 2mg 11%
Magnesium 42mg 10%
Potassium 289mg 6%

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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