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    Home » Recipes

    Easy Fluffy Oven-Baked Omelet Casserole

    Published: Feb 19, 2021, Last Modified: June 20, 2022 by Jeri - This site uses cookies - See the privacy policy linked in the footer - This post may contain affiliate links - This blog generates income via ads

    Jump to Recipe Print Recipe
    A closeup of a baked omelet casserole.

    This fluffy oven-baked omelet casserole is the easiest way to make an omelet. It contains protein-packed eggs, tender ham, fresh bell peppers, and wholesome mushrooms. It is perfect for breakfast, brunch, or supper. Make this ahead of time and store it in the fridge for a quick breakfast on busy mornings, perfect for back to school. It takes less than 15 minutes to prep, and then you pop it in the oven to bake. Set the timer and forget it. Plus, it tastes SO good.

    PIN the recipe to try it later!

    Oven baked fluffy omelet casserole made with fresh peppers, cheese, and ham. this …

    This is such an EASY way to prepare eggs. It doesn't get any easier, plus it's healthy, high in protein, and low in carbs.

    This is a healthy breakfast idea that you should keep in mind when you are pressed for time. It can easily be adjusted to make for a larger or smaller crowd.

    This egg casserole is filling and satisfying. It bakes up to a puffy, golden casserole that your whole family will love. Eat it as is, or put it inside a wrap for a healthy breakfast.

    Plus, you don't have to stand at the stove waiting for it to cook like you do when cooking a regular omelet.

    Oven baked fluffy omelet casserole made with fresh peppers, cheese, and ham
    Jump to:
    • 🥘 Ingredients
    • 🍳 Instructions
    • 📖 Variations - What else can you add?
    • 🥗 Side dishes
    • FAQs
    • More Breakfast Recipes
    • 📋 Recipe
    • More Recipes
    • 💬 Comments

    🥘 Ingredients

    • Eggs. Eggs have so many health benefits. For instance, eggs have more nutrients -- such as vitamins, minerals, amino acids -- per calorie than most other foods, are high in protein, help your good cholesterol and lower triglycerides, lower your chance of having a stroke, are heart-healthy, help your eyes, and sharpen your brain.
    • Milk. I use 1% milk, but you can use almond milk, coconut milk, or oat milk.
    • Shredded cheese. I use white cheddar cheese, but you can use your favorite kind. It would be great with sharp cheddar, gouda, swiss, mozzarella, or even feta.
    • Diced ham. Ham goes great in an omelet, just make sure it is already precooked. You could also use bacon, thinly sliced cooked steak, cooked sausage, leftover chicken, or salmon.
    • Mushrooms, bell peppers (I used green, yellow, and orange). You can also use spinach, tomatoes, and leeks. Look in your fridge and use up anything that you have sitting in the crisper.

    This omelet is easy to modify to suit your tastes. Are you a vegetarian? Leave out the meat. Do you want to make it healthier? Add more vegetables. The sky is the limit for what you can do with this baked oven omelet.

    🍳 Instructions

    This oven-baked omelet is really easy and takes very little prep time. First, you preheat the oven, whisk together the eggs, add the milk, seasoning salt, pepper. Next, stir in ham, cheese, peppers, and mushrooms. Pour the mixture into a greased 9 x 12 baking dish, and bake for 45 minutes at 350 degrees. Cut into squares and serve. Easy right?

    Whisking eggs for a fluffy omelet with a whisk and a bowl
    Make this easy healthy breakfast with fresh eggs, shredded cheese, diced ham, and mushrooms
    Learn how to make this easy and healthy breakfast omelet with eggs, bell peppers, mushrooms, ham, and cheese
    Click here to learn how to make a fluffy oven baked omelet casserole with bell peppers, diced ham, sliced mushrooms, and shredded cheese
    Click here to get the recipe for a super fluffy, tasty bell pepper, mushroom, ham, and cheese baked omelet
    A slice of fluffy oven-baked omelet casserole

    📖 Variations - What else can you add?

    • Crisp bacon.
    • Tomatoes.
    • Fresh herbs.
    • Spinach.
    • Onions.
    • Garlic.
    • Zucchini.
    • Celery.

    🥗 Side dishes

    • Avocado.
    • Fruit.
    • Tomatoes.
    • Crispy oven-roasted potatoes or hashbrowns.
    • Salad.
    • Toast.
    • English muffin.
    • Pancakes.
    • French toast.

    FAQs

    Are Omelets Healthy?

    Yes, omelets can be part of a balanced diet. They are mainly composed of eggs that are nutrient-dense, heart-healthy, and an excellent source of protein.
    However, how healthy they depend on what you put into your omelet. For example, if you add lots of vegetables to your omelet, it will contain fiber, vitamins, and minerals. 
    Because this omelet is oven-baked and not fried, there is no added fat with oils to add calories.

    Can omelets help you lose weight?

    Omelets are also part of a diet that can help you lose weight. According to Business Insider, eggs are a superfood high in amino acids, which help boost your metabolism and burn calories. Eggs are also low in calories and help you feel fuller longer. If you eat an omelet full of vegetables, it is a great meal to have if you want to lose weight. Just leave out the add-ins that increase fat and calories, such as cheese and ham.

    More Breakfast Recipes

    • Seriously Easy Spinach And Mushroom Omelet
    • How To Make Perfect Instant Pot Hard Boiled Eggs
    • The Easiest Homemade Buttermilk Sheet Pan Pancakes
    • Easy Crispy Buttermilk Belgian Waffles

    If you’ve tried this Fluffy Oven-Baked Omelet Casserole or any other recipe, please take a moment to rate the recipe and leave a comment letting me know how you liked it. I love hearing from you!

    You can also Follow Me on Instagram, Facebook, and Pinterest. Would you please tag me in your photos @windingcreek_ranch? I would love to see your pictures!

    📋 Recipe

    Oven baked fluffy omelet casserole made with fresh peppers, cheese, and ham.

    Fluffy Oven-Baked Omelet Casserole Recipe

    This fluffy oven-baked omelet casserole is a healthy breakfast idea that my family loves, and it takes less than 15 minutes of prep before baking.
    4.92 from 24 votes
    Print Pin Rate Save Saved!
    Course: Breakfast
    Cuisine: American
    Keyword: breakfast, brunch, eggs
    Prep Time: 15 minutes
    Cook Time: 45 minutes
    Total Time: 1 hour
    Servings: 8
    Calories: 199kcal
    Author: windingcreekranch

    Ingredients

    • 12 eggs
    • 1½ cup milk
    • ¾ teaspoon seasoning salt
    • 1½ cup diced ham
    • 1 cup shredded cheddar cheese
    • 1½ cup finely chopped bell peppers
    • 1 cup mushrooms
    • ¼ teaspoon black pepper

    Instructions

    • Preheat oven to 350 degrees
    • Whisk together the eggs.
    • Add milk and seasoning salt.
    • Stir in ham, cheddar cheese, bell peppers, and mushrooms.
    • Pour into a greased 9 x 12 baking dish.
    • Bake at 350 degrees for 45 minutes until golden brown on top and eggs are set.
    • Cut into squares and serve.
    • Enjoy!

    Notes

    Nutritional information is approximate and is meant as a guideline only.

    Nutrition

    Serving: 1grams | Calories: 199kcal

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    Comments

    1. Brenda

      June 21, 2022 at 8:11 am

      5 stars
      WONDERFUL!!! I served to weekend company (2 people that we had only met) and they couldn’t stop raving about this!!!
      Thank you for sharing!

      Reply
      • Jeri

        June 21, 2022 at 3:44 pm

        Thank you for trying our oven baked omelet casserole, Brenda. I'm so glad you and your guests enjoyed it! It's one of our favorites! Thanks for taking the time to come back and leave a comment! 🙂

        Reply
    2. Mihaela | https://theworldisanoyster.com/

      August 15, 2021 at 3:21 am

      5 stars
      I used to make oven-baked omelettes (when I had more time at hand, LOL), and spinach and courgettes were always among the ingredients. Broccoli too, since my fussy eater likes it, paradoxically:) You just reminded me how nicely they turn up!

      Reply
    3. Jean

      August 14, 2021 at 11:38 pm

      5 stars
      when I first saw the photo I knew it already looks delicious and can be served on occasions too!

      Reply
    4. Nora

      July 28, 2021 at 9:57 am

      5 stars
      Yum! This looks so delicious! Can't wait to try it out and have a bite! Thank you for sharing!

      Reply
    5. Freya

      July 28, 2021 at 9:06 am

      5 stars
      How delicious and cheesy this looks! And so easy too!

      Reply
    6. Kay

      July 28, 2021 at 3:41 am

      5 stars
      A great recipe that even my fussy eater daughter enjoyed! Is now a weekly meal in our house.

      Reply
    7. Amy

      July 28, 2021 at 1:33 am

      5 stars
      This was such a great idea and honestly, so much easier, especially when I'm feeding quite a few people. I especially loved it because it enabled me to get rid of some of the vegetables that were in the fridge. They were fluffy as you said and you're right, high in protein and low in carbs is such an added bonus.

      Reply
    8. Linda

      July 27, 2021 at 9:31 pm

      5 stars
      This omelet casserole is delicious! So flavorful and easy to prep and clean up.

      Reply

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