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I love baked egg dishes. They are the perfect way to pair protein-rich eggs with loads of vegetables!

slice of mushroom and gruyere pie

This particular “egg pie” features mushrooms, which promote immune function and are loaded with B vitamins and antioxidants. Did you know that mushrooms are the only fruit or vegetable that contain vitamin D? Just like humans, mushrooms produce vitamin D when exposed to sunlight. [source] Mushrooms are also known for their “meaty” texture, making them the perfect addition to any vegetarian meal.

I’ve managed to sneak an extra serving of veggies into this fluffy egg dish, by adding shredded yellow summer squash, too. The color and texture blend seamlessly into this pie, so no one will ever suspect how many veggies they’re actually eating!

This comforting meal can be served at any time of the day, and is easily re-heated for a quick meal during the week. I’ve even eaten it cold, straight out of the fridge. Either way, it’s delicious!

Mushroom & Gruyere Pie
makes one 9″ pie

Adapted from my Bacon & Gruyere Egg Casserole

Ingredients:

2 teaspoons grass-fed butter
8 oz. mushrooms, sliced
1 yellow onion, chopped
1 cup shredded yellow summer squash
4 eggs
4 oz. gruyere cheese, shredded and divided
1/4 teaspoon dried thyme
1/2 teaspoon fine sea salt, or to taste

Directions:

Preheat the oven to 350F and grease a 9″ pie pan generously with coconut oil or butter.

Melt one teaspoon of butter in a large skillet over medium heat, and saute the chopped onions for about 10 minutes, until tender and translucent. In another large skillet over medium heat, saute the sliced mushrooms in the other teaspoon of butter and 1/4 teaspoon of sea salt, until they are tender. Remove both the sauteed onions and mushrooms from the heat, and transfer them to a large bowl with the shredded summer squash.

veggie prep

Add the eggs, 3 oz. of shredded cheese, dried thyme and remaining 1/4 teaspoon of sea salt to the bowl, and mix until everything is well combined. Transfer the mixture to the greased pie pan, and top with the remaining ounce of shredded cheese.

cheese sprinkled on top of pieBake at 350F for about 35 minutes, or until golden around the edges and firm in the center.

baked mushroom and gruyere pie

Remove from the oven and allow to cool for 10 minutes before serving.

mushroom and gruyere pie with a slice taken out of itStore any leftovers in the fridge, well covered, for up to 4 days.

Slice of Mushroom and gruyere pie

Mushroom & Gruyere Pie

5 from 5 votes
A protein-rich pie that's loaded with veggies! Perfect for any meal of the day.
prep20 mins cook35 mins total55 mins
Servings:4

Ingredients
 
 

  • 2 teaspoons grass-fed butter
  • 8 oz . mushrooms , sliced
  • 1 yellow onion , chopped
  • 1 cup shredded yellow summer squash
  • 4 eggs
  • 4 oz . gruyere cheese , shredded and divided
  • 1/4 teaspoon dried thyme
  • 1/2 teaspoon fine sea salt , or to taste

Instructions

  • Preheat the oven to 350F and grease a 9" pie pan generously with coconut oil or butter.
  • Melt one teaspoon of butter in a large skillet over medium heat, and saute the chopped onions for about 10 minutes, until tender and translucent. In another large skillet over medium heat, saute the sliced mushrooms in the other teaspoon of butter and 1/4 teaspoon of sea salt, until they are tender. Remove both the sauteed onions and mushrooms from the heat, and transfer them to a large bowl with the shredded summer squash.
  • Add the eggs, 3 oz. of shredded cheese, dried thyme and remaining 1/4 teaspoon of sea salt to the bowl, and mix until everything is well combined. Transfer the mixture to the greased pie pan, and top with the remaining ounce of shredded cheese.
  • Bake at 350F for about 35 minutes, or until golden around the edges and firm in the center.
  • Remove from the oven and allow to cool for 10 minutes before serving.
  • Store any leftovers in the fridge, well covered, for up to 4 days.

Notes

If you don't care for mushrooms, there are a variety of other veggies you could use instead. Try adding spinach, kale, broccoli, peppers, or any other vegetables you like!

Nutrition

Calories: 226kcal | Carbohydrates: 5g | Protein: 16g | Fat: 15g | Saturated Fat: 8g | Cholesterol: 200mg | Sodium: 470mg | Potassium: 378mg | Fiber: 1g | Sugar: 3g | Vitamin A: 625IU | Vitamin C: 8mg | Calcium: 322mg | Iron: 1.3mg
Course: Breakfast
Cuisine: American
Keyword: breakfast, healthy, pie
Per Serving: Calories: 226, Fat: 15g, Carbohydrates: 5g, Fiber: 1g, Protein: 16g

Note: If you don’t care for mushrooms, there are a variety of substitutions you could use instead. Try adding spinach, kale, broccoli, peppers, or any other vegetables you like!

Reader Feedback: Are you a fan of baked egg dishes? Any favorite combos you want to share?

Megan Gilmore leaning on her white countertop.

Megan Gilmore

Hi, I’m Megan. A former fast food junkie trying to make healthy living as easy as possible.

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Comments

  1. Great recipe. I had to make a few modifications for diet (can’t do onion so added roasted corn and 1/4 tsp onion powder) and I forgot the squash (oops), and had 1 egg and used egg whites for the rest. Delicious. Leftovers heat up great in the air fryer and DH loves it. Planning to make again with squash this time. :-). Thank you!