Caramelized Onion & Mushroom Quiche

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Onions and mushrooms are classic quiche ingredients. To make the most of these vegetables and build big flavor fast, sauté sliced red onion and cremini mushrooms until golden brown (about 10 minutes) before adding them to the pie crust.

By
Carolyn Hodges, M.S., RDN
Carolyn Hodges Headshot
Carolyn Hodges, M.S., RDN

Carolyn Hodges, M.S., RDN is a culinary dietitian and creator of "The Dinner Shift," a food-rule free website dedicated to helping families get dinner on the table with weeknight-friendly recipes, simple meal planning and meal prep basics. When she's not creating content for her own site, grocery shopping or washing a million dishes, Carolyn teaches higher ed nutrition and develops and photographs recipes and nutrition-related content for clients. She calls Cleveland, Ohio home along with her in-house recipe critics, her husband, Kyle, and their two boys, Caleb and Ezra.

EatingWell's Editorial Guidelines
Updated on April 19, 2024
Tested by
EatingWell Test Kitchen
Eating Well Bio Page
Tested by EatingWell Test Kitchen

The EatingWell Test Kitchen is comprised of a group of culinary professionals who develop and test our recipes. Our recipes go through a rigorous process, which includes testing by trained recipe testers, using different equipment (e.g., gas and electric stoves) and a variety of tools and techniques to make sure that it will really work when you make it at home. Testers shop major supermarkets to research availability of ingredients. Finally, a Registered Dietitian reviews each recipe to ensure that we deliver food that's not only delicious, but adheres to our nutrition guidelines as well. Learn more about our food philosophy and nutrition parameters.

Meet the EatingWell Test Kitchen
Reviewed by Dietitian
Jessica Ball, M.S., RD
Jessica Ball
Reviewed by Dietitian Jessica Ball, M.S., RD
Jessica Ball, M.S., RD, is nutrition editor for EatingWell. She is a registered dietitian with a master's in food, nutrition and sustainability. In addition to EatingWell, her work has appeared in Food & Wine, Real Simple, Parents, Better Homes and Gardens and MyRecipes.
EatingWell's Editorial Guidelines
Active Time:
15 mins
Total Time:
1 hr 10 mins
Servings:
6
Nutrition Profile:
Nut-Free Soy-Free Vegetarian
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Ingredients

  • 1 (9 inch) frozen prepared pie crust

  • 1 tablespoon extra-virgin olive oil

  • ½ large red onion, sliced

  • 8 ounces cremini mushrooms, sliced

  • ½ teaspoon salt, divided

  • 4 large eggs

  • 1 ¼ cups whole milk

  • ⅛ teaspoon ground pepper

Directions

  1. Preheat oven to 375°F. Set out pie crust to thaw for 10 to 20 minutes.

  2. Meanwhile, heat oil in a large nonstick skillet over medium heat. Add onion and cook, stirring occasionally until beginning to soften, about 5 minutes. Add mushrooms and cook, stirring, until the onions are golden brown and the mushrooms reduce by half, about 5 minutes. Season with 1/4 teaspoon salt and set aside to cool slightly. Transfer the vegetable mixture to the crust.

  3. Whisk eggs, milk, pepper and the remaining 1/4 teaspoon salt in a medium bowl. Pour over the vegetables.

  4. Set the quiche on a baking sheet and bake until the center is set, 35 to 40 minutes. Let stand for 10 minutes before slicing.

    5-Inggredient-Quiche_Caramelized-Onion-Mushroom
    Photo by: Carolyn A. Hodges, R.D.
Originally appeared: EatingWell.com, March 2021

Nutrition Facts (per serving)

242 Calories
15g Fat
20g Carbs
9g Protein
Nutrition Facts
Servings Per Recipe 6
Serving Size 1 slice
Calories 242
% Daily Value *
Total Carbohydrate 20g 7%
Dietary Fiber 1g 4%
Total Sugars 5g
Protein 9g 18%
Total Fat 15g 19%
Saturated Fat 5g 25%
Cholesterol 129mg 43%
Vitamin A 263IU 5%
Sodium 386mg 17%

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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