Mushroom Leek Frittata

Quick, easy, and delicious! This Mushroom Leek Frittata combines earthy mushrooms, sweet leeks, and creamy Asiago cheese for a meal ready in just 30 minutes.

Mushroom Leek Frittata on a wooden board, partially sliced.

Lately, my husband and I have been on a breakfast-for-dinner kick with eggs as an easy option.

A freshly cooked Mushroom Leek Frittata in a black skillet.

This Mushroom Leek Frittata makes a delicious meal, filled with mushrooms, leeks, and Asiago cheese. Frittatas don’t seem to get the credit they deserve—they’re quick, customizable, and perfect for breakfast, lunch, or dinner. Essentially, they’re like a quiche without the hassle of a crust and fewer calories!

Mushroom Leek Frittata with a slice missing.

Reasons to Love This Frittata

  • Mushroom Leek Frittata is the perfect solution for using up leftover veggies and eggs—quick, easy, and no waste!
  • This Mushroom Leek Frittata recipe is a lifesaver on busy mornings—a healthy, filling breakfast that’s ready in no time.
  • Mushroom Leek Frittata is a one-pan wonderminimal cleanup means more time to relax and enjoy your meal.

Recipe Ingredients

Leek Frittata on a wooden board, partially sliced.
  • Crimini Mushrooms: Earthy and slightly nutty, these mushrooms add a savory depth and meaty texture to the frittata.
  • Leeks: Mildly sweet and delicate, leeks bring a subtle onion flavor.
  • Asiago Cheese: Asiago melts wonderfully, adding a creamy, tangy kick.

For a full list of ingredients and amounts, see the recipe card below.

Variations

  • Mushroom Varieties: You can switch up the mushrooms in this frittata to suit your taste or what’s in season. Crimini or Baby Bellas add an earthy flavor, while button mushrooms are milder. If you’re feeling adventurous, try shiitake or portobello for a deeper, woodsy taste.
  • Shallots Instead of Leeks: Try swapping out the leeks for thinly sliced shallots. They’ve got that same mild, sweet flavor with a hint of garlic.

How to Make Mushroom Leek Frittata

Step #1: Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). Place a 9″ non-stick ovenproof skillet on your stovetop. Add the olive oil to the pan and turn the burner to medium-high heat.

Step #2: Meanwhile, crack the eggs into a medium bowl and beat well. Whisk in the milk, salt, pepper, and 2 ounces (half) of the grated cheese.

Step #3: Once the oil is hot, add the sliced mushrooms in a single layer. Cook, turning once, for 90 seconds per side. Add the sliced leeks and sauté for 3 minutes. Add the garlic and sauté for 30 seconds.

Step #4: Pour the egg mixture into the pan and turn off the burner. Carefully transfer the pan to the center rack of your oven. Bake for 15 minutes, until set.

Step #5: Remove the pan from the oven and top with the remaining 2 ounces of cheese. Run a spatula around the inside edge of the pan to loosen the frittata. Tilt the pan and use the spatula to tip the frittata out onto a flat surface. Serve garnished with scallions.

Mushroom Frittata served on a plate.

Expert Tips

  • Use a Silicone Spatula: A silicone spatula works best for loosening the frittata from the pan. It prevents scratching your nonstick surface and helps slide the frittata out smoothly without breaking.
  • Test for Doneness: Gently shake the pan before removing the frittata from the oven. If the center still jiggles, give it another minute or two to ensure it’s fully set, avoiding a runny texture.
Mushroom Leek Frittata sliced into a wooden board.

FAQs

Can I use a different cheese in this Mushroom Leek Frittata?

Absolutely! While Asiago adds a tangy flavor, you can substitute it with Parmesan, Gruyère, fontina cheese, or even sharp Cheddar cheese for a different twist. Just choose a cheese that melts well to maintain the creamy texture.

What other vegetables can I add to the frittata?

You can add spinach, bell peppers, or tomatoes for extra flavor and nutrition. Just be sure to sauté any additional vegetables before adding them to the egg mixture.

Storage Info

To store your Leek Frittata, let it cool completely, then refrigerate in an airtight container for up to 3 days. To freeze, wrap individual slices in plastic wrap and store them in a freezer-safe bag for up to 2 months.

Reheat by thawing in the fridge overnight if frozen, then warm in a 350°F (175°C) oven for 10 minutes or microwave for 1-2 minutes until heated through.

Did you try this recipe? Leave a ⭐️ rating below and share it on Instagram, Facebook and Pinterest!

Mushroom Leek Frittata on a wooden board.

Mushroom Leek Frittata Recipe

Quick, easy, and delicious! This Mushroom Leek Frittata combines earthy mushrooms, sweet leeks, and creamy Asiago cheese for a meal ready in just 30 minutes.
4.3 from 8 votes
Pin Rate
Course: Main Dish
Cuisine: European
Diet: Gluten Free, Vegetarian
Prep Time: 15 minutes
Cook Time: 15 minutes
Total Time: 30 minutes
Servings: 4
Calories: 276kcal
Author: Linda
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Ingredients

  • 1 tablespoon extra virgin olive oil
  • 6 large eggs
  • 1/2 cup milk
  • 1/2 teaspoon salt
  • 1/4 teaspoon freshly ground black pepper
  • 4 ounces grated asiago cheese - divided
  • 2 ounces crimini - brown mushrooms, sliced
  • 1 cup sliced leeks - white and pale green parts only
  • 1 tbsp minced garlic
  • 2 tablespoons chopped scallions
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Instructions

  • Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). Place an oven-safe 9" non-stick skillet on your stovetop. Add the olive oil to the pan and turn the burner to medium-high heat.
  • Meanwhile, crack the eggs into a medium bowl and beat well. Whisk in the milk, salt, pepper, and 2 ounces (half) of the grated cheese.
  • Once the oil is hot, add the sliced mushrooms in a single layer. Cook, turning once, for 90 seconds per side. Add the sliced leeks and sauté for 3 minutes. Add the garlic and sauté for 30 seconds.
  • Pour the egg mixture into the pan and turn off the burner. Carefully transfer the pan to the center rack of your oven. Bake for 15 minutes, until set.
  • Remove the pan from the oven and top with the remaining 2 ounces of cheese. Run a spatula around the inside edge of the pan to loosen the frittata. Tilt the pan and use the spatula to tip the frittata out onto a flat surface. Serve garnished with scallions.

NOTES

To store your Leek Frittata, let it cool completely, then refrigerate in an airtight container for up to 3 days. To freeze, wrap individual slices in plastic wrap and store them in a freezer-safe bag for up to 2 months.
Reheat by thawing in the fridge overnight if frozen, then warm in a 350°F (175°C) oven for 10 minutes or microwave for 1-2 minutes until heated through.

Nutrition

Serving: 1serving | Calories: 276kcal | Carbohydrates: 8g | Protein: 20g | Fat: 18g | Saturated Fat: 8g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 0.03g | Cholesterol: 268mg | Sodium: 856mg | Potassium: 285mg | Fiber: 1g | Sugar: 3g | Vitamin A: 1029IU | Vitamin C: 4mg | Calcium: 432mg | Iron: 2mg

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About the Author

Linda

Hi, I'm Linda! Welcome to The Wanderlust Kitchen, where I share recipes and travel adventures from all around the world. Here you'll find a world of recipes you can have confidence in. These recipes celebrate authentic food heritage as well as modern techniques and ingredients. Be adventurous and try a new recipe and travel somewhere you have never been before.  Bon Appétit! Bon Voyage!  

4.25 from 8 votes (7 ratings without comment)

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Comments:

  1. Just letting you know that over the weekend I featured this recipe in my monthly Deliciously Healthy Low-Carb Recipes round-up. I hope a lot of my readers will click over and try the recipe! And Happy New Year!

  2. This is so fresh and pretty, and one of the few cases where healthy and comfort meet in one delicious dish, pinned!