Baked Mushroom Leek Frittata

May 6, 2016

Meaty mushrooms and sweet leeks are a classic combination that pair beautifully in this easy and nutritious Baked Mushroom Leek Frittata that’s perfect for a weeknight dinner or your next weekend brunch.

Baked Mushroom Leek Frittata on Plate

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I was compensated for writing the original article, “Mushrooms,” and developing the recipe found in the April 2016 issue of Today’s Dietitian. I was not compensated for sharing the column or magazine with readers on my blog. All opinions are my own. This page also contains affiliate links. See below for full disclosure statement.

I have a quick and easy recipe for you today, just in time for Sunday’s Mother’s Day brunch!

Frittatas are some of my go-to recipes for busy weeknight dinners or weekend brunches. I love them because they are quick and easy to put together, you can use whatever veggies are on hand in the fridge, change up the flavor profile based on the ingredients you include, and they’re an excellent source of protein. Plus, they’re relatively low in calories since you don’t have the pie crust like you do with a quiche.

Traditionally, frittatas are made in a sauté pan starting on the stove top and finished in the oven. Personally, I hate cleaning eggs out of a sauté pan and I’ve burnt my hands one too many times on the handle of the pan after it comes out of the oven. (Why do I always forget it was in the oven so it’s hot?!) So my preference is to bake frittatas in the oven in a pie dish.

Note: When I originally developed this Mushroom Leek Frittata recipe and wrote this post I did not own a cast-iron skillet. I now do, and make most of my frittatas in it. It’s much easier to clean than a non-stick sauté pan and the benefit of making the frittata in one is that it’s now a one-pot meal! 

I first sauté my vegetables and then transfer them to a pie dish, top with the egg mixture and cheese and bake. It takes a little bit longer and adds one more dish to clean, but it’s worth it to me. Plus it looks really pretty when serving to company! The food’s gotta look good, right?!

Baked Mushroom Leek Frittata in Pan

Frittata Flavor-Boosting Tips

I have a couple of tricks up my sleeve that really boost the flavor of my frittatas. It’s your lucky day because I’m going to share them with you so your frittatas can be as jam-packed with flavor as mine are!

1. After sautéing the vegetables I deglaze the pan using water, balsamic vinegar or white wine vinegar. The deglazing process helps scrape up all those well-done veggies and adds to the umami of the veggie mixture, especially when mushrooms are involved. Check out this post by my friend and colleague Regan at Healthy Aperture to learn more about umami.

2. In addition to sprinkling the top of my frittatas with cheese before I bake them, I add cheese to the bottom of the pie dish before adding my vegetables and egg mixture on top. The layer of cheese on the bottom is almost crust-like and ensures you get cheese in every bite. No more fighting over the cheesy parts of the eggs!

Baked Mushroom Leek Frittata Slice

So there you have my two tips for making sure your frittatas are as flavor packed as possible.

Mushrooms + Eggs = Delicious

As for what’s in this Baked Mushroom Leek Frittata, mushrooms are the star of the show! As you may remember from my Creamy Pureed Mushroom Soup post, mushrooms are one of my favorite vegetables and I especially love adding them to egg dishes. They add so much depth of flavor to the dish – there’s that umami again! – and they pair well with a lot of cheeses and other vegetables.

My Mushroom Onion Quiche is a favorite in our house and with guests, and I often make it as a frittata for a lighter dinner. The recipe below is quite similar, but instead of using onions I use leeks since it’s spring and now is when they’re in season. Plus they have a sweetness that regular onions lack. To learn more about mushrooms, head over to the April issue of Today’s Dietitian Magazine and read my Culinary Corner column, which is also where this recipe was originally featured.

Before you get sidetracked with all the fun info about mushrooms, print this recipe and tape it on the fridge so your husband or kids can make it for you this weekend! You deserve a break from the kitchen (at least I know I do!).

Baked Mushroom Leek Frittata on Plate with Fork

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Meaty mushrooms and sweet leeks are a classic combination that pair beautifully in this easy and nutritious frittata that’s perfect for a weeknight dinner or your next weekend brunch. Get the gluten-free and vegetarian recipe @jlevinsonrd.

Baked Mushroom Leek Frittata

Yield: 6
Prep Time: 10 minutes
Cook Time: 40 minutes
Total Time: 50 minutes

Meaty mushrooms and sweet leeks are a classic combination that pair beautifully in this easy and nutritious frittata that’s perfect for a weeknight dinner or your next weekend brunch.


  • Cooking spray
  • 2 teaspoons olive oil
  • 1 medium leek,, white and light green parts only, cut in half lengthwise and thinly sliced
  • 8 oz sliced mushrooms, (any type; for this recipe I used a mix of shitake and baby bella)
  • 1 tablespoon water
  • 1 clove garlic,, minced
  • 1 tablespoon chopped fresh thyme, (or 1 teaspoon dried)
  • 1/2 teaspoon Kosher salt,, divided
  • Freshly ground pepper,, to taste
  • 6 large eggs
  • 1 cup evaporated skim milk
  • 1 cup shredded Parmesan cheese,divided, (~4 ounces)


  1. Preheat oven to 375 degrees F. Spray 9-inch pie dish with cooking spray and set aside.
  2. Heat olive oil in a large skillet over medium-high heat. Add leeks and sauté 3 minutes, until softened. Add mushrooms and sauté 5 to 6 minutes until softened and most of the water has evaporated. Add 1 tablespoon water to deglaze the pan.
  3. Stir in garlic, thyme, 1/4 tsp salt, and pepper, and cook one minute until fragrant. Remove from heat.
  4. In a medium bowl, whisk together eggs, evaporated skim milk, remaining 1/4 tsp salt, and pepper, to taste.
  5. Sprinkle 3/4 cup of cheese in bottom of pie dish and top with mushroom leek mixture. Pour egg mixture on top and sprinkle with remaining ¼ cup cheese.
  6. Bake frittata for 30 minutes until top is puffed and golden brown.


Note: I have made this recipe without the evaporated milk as well and it's just as delicious! 

Nutrition Information:
Yield: 6 Serving Size: 6 Servings
Amount Per Serving: Calories: 193

For more seasonal goodness, I highly recommend having one (or two!) Strawberry Rhubarb Mimosas with your Mother’s Day brunch. Hope all the moms out there have a wonderful – and relaxing – day!

Do you prefer frittatas or quiche?

What’s your favorite ingredient combination?

Share with me in the comments below!

Baked Mushroom Leek Frittata with Text Overlay

Disclosure: This page contains affiliate links. If you purchase products through these links, your cost will be the same but I will receive a small commission to help with operating costs of this blog. As always, all thoughts and opinions are my own and I only recommend products I truly believe in.

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  1. Love this Jessica! And AMEN, I totally use the pie pan too! I love the extra cheesy-ness! I like mushrooms a ton in mine, but Wayne hates them. So I usually add them on top, and fill it with bell peppers and onions! Have a wonderful Mothers Day!

    1. Thanks Liz! You have to get Mr. CEO to like mushrooms better!! Bell peppers and onions are delish in frittatas too though! Thank you so much for the Mother’s Day wishes! Xo

    1. Thanks! Hope you try this one Deborah! The recipe includes evaporated skim milk (not condensed milk), which is thicker than regular skim milk but still fat-free. Great way to add creaminess without the added calories.

    1. Thanks so much Amber! Totally agree – it’s a great way to get veggies in at breakfast. Can’t wait to hear how you like it!

    1. Thank you so much Sonali!!! I hope you had a wonderful Mother’s Day and you were spoiled rotten!

  2. What a great idea to spread the Parm on the BOTTOM of the pie plate to form a bit of a crust. I have two cartons of sliced mushrooms in the fridge and hope to get leeks from my CSA very soon so I can try this frittata.

    1. Thanks Janice! Don’t you just love getting cheese in every bite? Can’t wait for you to try it!

  3. […] Baked Mushroom Leek Frittata | Nutritioulicious […]

  4. would love nutrition facts on this recipe as I’m on a very restrictive diet. looks so tasty and beautiful for a special dinner but I need to know nutrition facts before I could eat it.

    1. Hi Melodie,
      Here are the nutrition facts for 1/6th of the frittata:
      193 calories, 10 g total fat, 4 g saturated fat, 9.5 g carbohydrate, 1 g fiber, 6.5 g sugar, 16 g protein, 391 mg sodium, 197 mg cholesterol
      I’m not sure what the restrictions of your diet are, but feel free to email me if you want to share and I can guide you how to adjust the recipe to fit. I hope you get a chance to enjoy the frittata!

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