Healthy Recipes Healthy Mealtime Recipes Healthy Breakfast & Brunch Recipes Breakfast Casserole Recipes Spinach, Mushroom & Egg Casserole 3.6 (7) 7 Reviews This delightful spinach, mushroom and egg casserole is layered with earthy cooked mushrooms and baby spinach, fluffy eggs and nutty cave-aged Gruyère that deepens the flavor. Serve this easy casserole for breakfast, brunch or even dinner with a green salad on the side. By Marianne Williams Marianne Williams Instagram Marianne Williams has been a test kitchen professional for Dotdash Meredith since 2016. Her recipes have been featured in many publications, including Food & Wine, Real Simple, Southern Living, Health, Rachael Ray and other print and digital brands. EatingWell's Editorial Guidelines Published on March 9, 2022 Reviewed by Dietitian Emily Lachtrupp, M.S., RD Reviewed by Dietitian Emily Lachtrupp, M.S., RD Emily Lachtrupp is a registered dietitian experienced in nutritional counseling, recipe analysis and meal plans. She's worked with clients who struggle with diabetes, weight loss, digestive issues and more. In her spare time, you can find her enjoying all that Vermont has to offer with her family and her dog, Winston. EatingWell's Editorial Guidelines Print Rate It Share Share Tweet Pin Email Active Time: 25 mins Total Time: 1 hr 5 mins Servings: 10 Nutrition Profile: Gluten-Free High-Protein Nut-Free Soy-Free Vegetarian Jump to Nutrition Facts Ingredients 2 tablespoons extra-virgin olive oil 1 pound cremini mushrooms, trimmed and sliced 5 medium cloves garlic, finely chopped 2 teaspoons dry mustard 1 teaspoon onion powder 1 teaspoon salt 5 ounces baby spinach 12 large eggs ¾ cup half-and-half 1 ½ cups shredded Gruyère cheese, preferably cave-aged (see Tip), divided 2 teaspoons fresh thyme leaves Directions Preheat oven to 375°F. Coat a 9-by-13-inch baking dish with cooking spray. Heat oil in a large skillet over medium-high heat. Add mushrooms in an even layer; cook, undisturbed, until starting to brown, 5 to 6 minutes. Stir and continue to cook, undisturbed, until golden brown on the bottom, about 3 minutes. Stir and continue to cook, stirring occasionally, until the mushrooms are browned all over and the liquid has evaporated, about 3 minutes. Add garlic, dry mustard, onion powder and salt; cook, stirring constantly, until fragrant, about 1 minute. Add spinach and cook, stirring constantly, until the spinach wilts, 1 to 2 minutes. Set aside to cool slightly, about 10 minutes. Crack eggs into a large bowl and whisk until completely smooth. Add half-and-half and whisk until combined. Reserve 1/2 cup of the vegetable mixture; scatter the remaining mixture in the prepared baking dish. Sprinkle evenly with 3/4 cup Gruyère. Pour the egg mixture over the top. Sprinkle evenly with the remaining 3/4 cup Gruyère and the reserved 1/2 cup vegetable mixture. Bake until puffed, golden brown and just set, 30 to 35 minutes. Let cool slightly, about 10 minutes. Sprinkle with thyme before serving. Greg Dupree Tip Cave-aged Gruyère is aged for at least a year in caves that provide the perfect environment for aging which intensifies the flavor and hardens the texture of the cheese. Look for it in well-stocked supermarkets, specialty cheese shops or online. While cave-aged Gruyère adds depth of flavor to this recipe, regular Gruyère will work well too. Rate it Print Nutrition Facts (per serving) 221 Calories 16g Fat 5g Carbs 15g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 10 Serving Size 1 slice Calories 221 % Daily Value * Total Carbohydrate 5g 2% Dietary Fiber 1g 4% Total Sugars 1g Protein 15g 30% Total Fat 16g 21% Saturated Fat 7g 35% Cholesterol 248mg 83% Vitamin A 1467IU 29% Vitamin C 5mg 6% Vitamin D 55IU 14% Vitamin E 1mg 9% Folate 41mcg 10% Vitamin K 69mcg 58% Sodium 455mg 20% Calcium 244mg 19% Iron 2mg 11% Magnesium 28mg 7% Potassium 309mg 7% Zinc 2mg 18% Vitamin B12 1mcg 42% 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. Powered by the ESHA Research Database © 2018, ESHA Research, Inc. All Rights Reserved