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Home » Recipes » Breakfast

Sheet Pan Frittata

Published: Dec 7, 2023 by Lexi
This post contains affiliate links, and I may receive commissions for purchases made through links on this post.

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This quick and easy Sheet Pan Frittata is the perfect breakfast solution for a large crowd or for meal prep! It's made with crispy hash browns, onion, pepper, spinach and feta but can be completely customized with any ingredients you have on hand.

Savory breakfast casserole with eggs, cheese, vegetables, and herbs in a baking dish.
You can customize this sheet pan frittata with any vegetables and cheese you want!
Jump to:
  • Why We Love This Recipe
  • Ingredient Notes
  • Step-by-step Instructions
  • Expert Tips and FAQs
  • Related Recipes
  • 📖 Recipe
  • 💬 Reviews

Whenever we have family visiting, we almost always make frittata. It's easy to throw together with just about any vegetables you have on hand, it cooks quickly and it's always a crowd-pleaser!

A standard size frittata only serves about 8, so this sheet pan version is an excellent solution for occasions when you have lots of company (the holidays!). It serves 12 and it comes together quickly. You can even prep the vegetables up to a few days in advance!

Why We Love This Recipe

  • Quick and easy: It only takes a little over 30 minutes to throw this sheet pan frittata together.
  • Serves a big crowd: This sheet pan frittata makes 12 servings, so it's a great option when you're hosting for the holidays.
  • Perfect for meal prep: We make a batch, cut it into squares and refrigerate for a quick and easy breakfast all week! I find the slices are a little easier to store and reheat.
  • Customizable: You can easily change up the flavor with different vegetables, cheese, herbs, meats, etc.
Savory vegetable frittata on blue plate with fresh ingredients.

Ingredient Notes

  • Eggs: We used large eggs.
  • Milk: We used whole milk, but really any variety will work. To keep this dairy free, we suggest using oat milk or a similar alternative. You can also use heavy cream if preferred.
  • Hash browns: We used unflavored frozen hash browns. Check to make sure your hash browns don't have a bunch of added salt/seasonings - if they do, just cut back on the amount of salt in the egg mixture.
  • Vegetables: We sauté red onion, bell pepper and spinach, but the options are really endless. Try it with broccoli, kale, squash, zucchini, tomatoes, etc.
  • Cheese: We used crumbled feta, but again, feel free to use any cheese you'd like. We also love it with cheddar.
  • Optional: Feel free to add in cooked bacon, turkey bacon, sausage or a vegetarian alternative!

Step-by-step Instructions

PREP: Preheat oven to 375˚F.

STEP 1: Heat 2 tablespoon oil or butter in a skillet over medium heat. Once hot, add in hash browns and cook for ~10 minutes, until crispy.

STEP 2: In a separate skillet, heat remaining 1 tablespoon oil and add onion. Season with a pinch of salt and cook for 1 minute, then add in bell pepper. Continue cooking for 2-3 minutes, until softened, then add in spinach and continue cooking just until wilted. Remove from heat.

Fluffy potato mash with melted cheese in a black skillet, festive holiday background.

STEP 3: Whisk together the eggs, milk, salt, pepper, garlic powder, onion powder, oregano and parsley in a large bowl.

STEP 4: Spread out the cooked vegetables (including the hash browns) and ⅓ of the feta on the bottom of the sheet pan. Pour egg mixture over the top and stir gently. Sprinkle remaining feta on top and red pepper flakes if using.

whisking together eggs and then pouring them over vegetables on a sheet pan.

STEP 5: Bake for 20 minutes, or until the eggs are set. Let cool slightly before slicing and serving.

Creamy vegetable and chicken casseroles in baking dishes. Fresh ingredients and baked to golden perfection. Perfect for family dinners and meal prep.

Expert Tips and FAQs

  • Line the bottom of the pan with parchment paper for easy removal and clean up. If your baking sheet is nonstick, you can skip this step!
  • Cook hash browns in a nonstick skillet for easier clean up and less sticking. It takes a bit longer to get them crispy, but there's nothing worse than all of the crispy bits sticking to the bottom of your pan!
  • Prep ahead of time: To save extra time, you can cook the vegetables up to 2-3 days before assembling and baking this sheet pan frittata. When you're ready to bake, just whisk up the egg mixture, pour it into the pan and bake!
  • Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days.
  • Freezer storage: Slice the cooked frittata into squares and wrap each square individually. You can freeze for up to 3 months. Reheat in a 275˚F oven for about 20 minutes.
Savory vegetable and cheese frittata on blue plate.

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Savory breakfast casserole with eggs, cheese, vegetables, and herbs in a baking dish.

Sheet Pan Frittata


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 1 review

  • Author: Lexi
  • Total Time: 35 minutes
  • Yield: 12 servings
  • Diet: Vegetarian
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Description

This quick and easy Sheet Pan Frittata is the perfect breakfast solution for a large crowd or for meal prep! It's made with crispy hash browns, onion, pepper, spinach and feta but can be completely customized with any ingredients you have on hand.


Ingredients

Units Scale
  • 3 tbsp oil or butter, divided
  • 16 oz frozen hash browns
  • 1 red onion, sliced thinly
  • 1 large bell pepper, sliced into strips
  • 5 oz (1 small box) spinach
  • 18 large eggs
  • 1 cup milk
  • 2-2 ½ teaspoon coarse kosher salt (less if using table salt)
  • ¾ tsp black pepper
  • 1 tsp garlic powder
  • ½ tsp onion powder
  • 1 tsp dried oregano
  • 1 tsp dried parsley
  • 7 oz feta cheese, crumbled
  • Optional: ½-1 teaspoon red pepper flakes for topping

Instructions

  1. Preheat oven to 375˚F. Optional: line a large baking sheet with parchment paper. (If using nonstick, this is not necessary.)
  2. Heat 2 tablespoon oil or butter in a skillet over medium heat. Once hot, add in hash browns and cook for ~10 minutes, until crispy.
  3. In a separate skillet, heat remaining 1 tablespoon oil and add onion. Season with a pinch of salt and cook for 1 minute, then add in bell pepper. Continue cooking for 2-3 minutes, until softened, then add in spinach and continue cooking just until wilted. Remove from heat.
  4. Whisk together the eggs, milk, salt, pepper, garlic powder, onion powder, oregano and parsley in a large bowl.
  5. Spread out the cooked vegetables (including the hash browns) and ⅓ of the feta on the bottom of the sheet pan. Pour egg mixture over the top and stir gently. Sprinkle remaining feta on top and red pepper flakes if using.
  6. Bake for 20 minutes, or until the eggs are set. Let cool slightly before slicing and serving.

Notes

Prep ahead of time: To save extra time, you can cook the vegetables up to 2-3 days before assembling and baking this sheet pan frittata. When you're ready to bake, just whisk up the egg mixture, pour it into the pan and bake!

Storage: Store leftovers in an airtight container in the refrigerator for up to 4 days.

Freezer storage: Slice the cooked frittata into squares and wrap each square individually. You can freeze for up to 3 months. Reheat in a 275˚F oven for about 20 minutes.

Make it dairy free: Use nondairy milk. We typically use oat milk and it works well!

Hash browns: We used unflavored frozen hash browns. Check to make sure your hash browns don't have a bunch of added salt/seasonings - if they do, just cut back on the amount of salt in the egg mixture.

Vegetables: We sauté red onion, bell pepper and spinach, but the options are really endless. Try it with broccoli, kale, squash, zucchini, tomatoes, etc.

  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Category: Breakfast
  • Method: Oven
  • Cuisine: American

Nutrition

  • Serving Size:
  • Calories: 237
  • Sugar: 3.2 g
  • Sodium: 492.6 mg
  • Fat: 15.1 g
  • Carbohydrates: 11.7 g
  • Fiber: 1.4 g
  • Protein: 13.9 g

Did you make this recipe?

Tag @crowded_kitchen on Instagram and hashtag it #crowdedkitchen

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Comments

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    Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

  1. Alana says

    December 26, 2024 at 10:35 am

    Made this for Christmas morning breakfast and it was amazing! So flavorful and much better than just a regular stovetop scramble.

    Reply
  2. SG Barbato says

    December 04, 2024 at 8:12 pm

    What’s size sheet pan is this? And does it translate to typical sterno trays? I’m
    Planning to bring it for a teachers’ breakfast. Thanks!

    Reply
    • CS says

      April 07, 2025 at 2:24 am

      Did you make this, if so what size sheet pan did you use. I would like to use a 16 x 22 sheet pan not sure if it work ? would I need to double the recipe.

      Reply
    • Shiks says

      May 03, 2025 at 12:36 pm

      I made this once last year for a potluck, and it turned out great! I wanna make it again, but I was also wondering what size sheet you use?

      Reply
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Savory breakfast casserole with eggs, cheese, vegetables, and herbs in a baking dish.
Savory vegetable and cheese frittata on blue plate.