by Olena

Air Fryer Breakfast Casserole

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Olena Osipov
5 from 1 vote

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Air Fryer Breakfast Casserole is quick to prepare, versatile, healthy, and packed with veggies (and optional meat) for a fluffy and flavorful breakfast! Swap out the fillings based on season for a breakfast that will never become boring.

Get even more filling ideas with this healthy baked breakfast casserole, hashbrown breakfast casserole, and/or sweet potato breakfast casserole!

air fryer breakfast casserole recipe with veggies and cheese finished in air fryer

Healthy Air Fryer Breakfast

Egg casseroles are a nutritious way to start the day and with this air fryer breakfast casserole, you don’t even have to switch on the oven! Instead, this air fryer breakfast recipe has you par-cook veggies (to avoid a mushy casserole), pour over the egg, and cook until fluffy and flavorful!

It’s delicious as is or there dozens of ways to adapt it to season, taste, dietary requirements, and more! Once cooked, serve up a slice either alone, as part of a brunch spread, or even make a light meal by adding a side of choice.

Looking for more simple breakfast bakes? You might also like this sweet potato and eggs dish, crustless zucchini quiche or browse this collection of 45 healthy breakfast dishes!

Why Make Air Fryer Breakfast Casserole Recipe?

  • Easy to prepare: Just chop then par-cook the veggies, pour over the cheese and egg, and cook to perfection!
  • Healthy way to start the day: Air fryer frittata is packed with protein, vitamins, minerals, and antioxidants.
  • Versatile: Enjoy air fried breakfast casserole year-round and mix and match add-ins based on seasonality.
  • Variety: Use the filling to egg ratio as your base recipe to experiment with different herbs, seasonings and cheeses.
  • Quick: Air fryer breakfast casserole takes just 35 minutes vs. an hour for oven baked egg casserole!
  • Hearty: This protein rich egg breakfast casserole will keep you full for hours without weighing you down.
  • Low carb breakfast: Only 7g net carbs per serving – this will vary based on what veggies you use!
stacked slices of breakfast casserole

Ingredients for Air Fryer Egg Bake

  • Eggs: You’ll need eight large eggs OR for an egg-white version, use 2 cups of liquid egg whites.
  • Milk: Use your milk of choice – I use whole dairy milk.
  • Vegetables: There are tons of options you could choose from. I used brown mushrooms, red bell pepper, red onion, and spinach (or kale) for this particular air fryer breakfast casserole.
  • Cheese: I love to use shredded parmesan cheese for the flavor it imparts with such a small amount. Feel free to use other varieties like cheddar cheese, Monterey Jack, mozzarella, etc.
  • Salt & Pepper

Keep reading below (after the recipe how-to) for more information on any add-ins and recipe variations!

How to Make Air Fryer Breakfast Casserole

  • Prepare the fillings: First, thinly slice the brown mushrooms, bell pepper, and onion. Then, shred the parmesan (I used the small/medium box grater side).
  • Prepare the air fryer: Preheat the air fryer at 400F/205C for 5 minutes (adjust for your specific model – some don’t require preheating at all.) Then, line the basket with parchment paper and trim away any corners sticking out to avoid burning.

It’s essential you make sure the parchment sheet is centered so that each side has enough height in the edges to hold the egg mixture.

Parchment paper sheets: For cooking in the air fryer, I love using these pre-cut 12 x 16 parchment sheets. They are very sturdy and convenient.

  • Par-cook the vegetables: Add the mushrooms, bell pepper, and onion with ¼ tsp salt and pepper. Air fry for 15 minutes, toss and stir once halfway.

This step is important to release some of the natural liquid within the vegetables to avoid the egg casserole becoming soggy.

  • Mix the egg: Meanwhile, in a medium bowl/jug, whisk eggs, milk, and ½ tsp salt and pepper. Whisk well to thoroughly combine.
  • Add the remaining ingredients: Remove the basket from your air fryer and add the spinach. Stir everything well with a spatula for a minute or two to allow the spinach to distribute evenly as it begins to wilt. Then, sprinkle everything with parmesan and carefully pour the egg mixture over the top.
  • Cook the egg casserole: Bake the air fryer frittata/ bake at 300F/150C for 20 minutes, or until a toothpick inserted into the center comes out clean. Finally, remove it from the air fryer, cool for a few minutes, then slice into 8 slices and enjoy the air fryer frittata slices hot or cold.

Optional Add-In’s and Variations

  • Other vegetables: There are tons of vegetables that you can use within this air fryer breakfast casserole. These include broccoli florets, asparagus, zucchini, shredded carrot, olives, sun-dried tomatoes, etc. Try green beans like I use in vegetable frittata! You can also use harder veggies like shredded potato/sweet potato/ thawed frozen shredded hash browns (make sure to par-cook also).
  • Protein: For extra protein and flavor, you can add several types of meat to the air fryer frittata. Chopped bacon (sautéed or not), deli ham, sliced/crumbled sausage, cooked ground turkey, leftover baked or air fryer chicken, beef, salmon etc. For plant-based protein, you could add chickpeas OR your favorite meat alternatives like sliced sausage or ground crumbles.
  • Herbs/spices/aromatics: An easy way to add extra flavor is with fresh herbs/aromatics; scallions, parsley, garlic, etc. You can also use dried herbs/spices to adjust the flavor; Italian seasoning, garlic powder, smoked paprika, etc.
  • Spice: Red pepper flakes, chili/cayenne powder, or a little hot sauce could all be added to the egg mixture for heat. Add a can of diced green chiles for a Mexican version.
  • Breadcrumbs: To add a little ‘crunch’ to the air fryer breakfast casserole, you can sprinkle the top with breadcrumbs before cooking.
  • Grain: For a heartier air fryer frittata, you can experiment with adding cooked grains (like quinoa) to the dish like I did with these egg muffins.
  • Make air fryer frittata: The only difference is to omit the milk; otherwise, continue with the remainder of the recipe as written.
  • Make egg muffins: You can mix the egg and veggies together in a bowl, then divide them into muffin liners (sprayed with cooking spray). Adjust the cooking time accordingly, testing with a toothpick until ready. I recommend checking from 8 minutes.

Tips for Best Results

  • My air fryer size: I use a large 8-quart Cosori air fryer. If yours is smaller/larger, then the size and depth of your egg casserole will vary (as will the cooking time). So adjust accordingly.
  • Preheat your air fryer: This will speed up the cooking time and evenly cook the breakfast egg casserole. Note that not all air fryers require preheating, though.
  • To avoid sticking: You might want to lightly spray the parchment paper with cooking spray.
  • Adjust the seasonings to taste: I try to keep recipes fairly low sodium, so feel free to adjust based on personal preference.
  • Use freshly grated parmesan: No anti-caking agents, which means better melting!

 

FAQs

Can I use an air fryer accessory pan for the breakfast frittata?

Yes, though I haven’t tried as I find the parchment paper is so easy to fit into your exact size of machine. However, feel free to use a pan and adjust the cooking time as needed (test middle with a toothpick to check readiness).

Is this a make-ahead recipe?

Sure is. You can par-cook the vegetables in advance and even mix the egg in advance (up to 2 days in advance!) and store separately in the fridge until you’re ready to cook the air fryer breakfast casserole. Check the storage section for all the details.

Can I line the air fryer basket with foil vs. parchment paper?

I don’t recommend it, as the egg mixture is more likely to stick to foil AND foil can leech chemicals into your food.

Can I add hash brown potatoes to this air fryer breakfast?

Yes – I recommend using frozen and thawed hash brown potatoes. You could also use fresh potatoes like I did for this hashbrown breakfast casserole.

Could I make this air fryer casserole in small ramekins?

I prefer to use muffin liners to make bite sized versions of this air fryer breakfast casserole. However, I imagine that small heat proof ramekins (glass or porcelain) would also work adjust the time accordingly. I recommend testing the middle with a toothpick at 8-10 minutes.

To add meat to air fryer breakfast bake, does it need to be cooked?

Not necessarily – it depends on the meat. When adding any ground meat (turkey, beef, chicken, sausage) then I always use cooked so I’m in better control of the recipe and can easily drain any excess fat. However, you technically don’t have to as it will cook in the 20 minutes cooking time. You can also add sautéed OR raw bacon pieces.

Is this a vegetarian breakfast casserole?

As long as you use a vegetarian cheese (as most parmesan is not vegetarian due to the rennet used), then this air fryer breakfast casserole makes for a delicious healthy vegetarian breakfast.

Ready to try more air fryer recipes? Have a meatless main dinner with air fryer tofu, serve your game day crowd with chicken wings or make salmon with brussels for a low carb meal!

air fryer breakfast egg casserole slices stacked on top of each other

Serving Reccomendations

This air fryer breakfast casserole makes for a delicious (simple) breakfast dish or quick mid day snack. Favorite topping ideas include:

You can also enjoy a slice for lunch or dinner with the sides of your choice, including:

You can also serve this air fryer breakfast casserole as part of a brunch charcuterie spread with pancakes/waffles, muffins and quick breads, fresh fruit, Instant Pot yogurt and healthy granola.

Making This Recipe in Advance

Make ahead: You can par-cook the vegetables and prepare the egg mixture 1-2 days in advance and store separately in airtight containers in the fridge. When you’re ready to cook the air fryer frittata, allow them to come to room temperature for 30 minutes, then continue with the recipe. It may still require a little additional cooking time due to the chilled ingredients.

Storing: This air fryer frittata/ casserole makes for the perfect meal prep snack/meal. Once cooked, store any leftovers in an airtight container in the fridge for up to 5 days.

Freezing: Allow the egg casserole to cool completely, then transfer to an airtight container/ Ziplock bag and freeze for up to 3 months. For individual slices, I recommend wrapping them individually with parchment paper – to avoid sticking. Allow it to thaw on the counter for 2-3 hours OR in the fridge overnight.

Reheat: Pop a slice (or more) of the casserole back in the air fryer for 5 minutes at 350F/175C. Alternatively, use a microwave for 2-3 minutes.

More Healthy Breakfast Recipes to Try

air fryer breakfast casserole on parchment paper
Air Fryer Breakfast Casserole

Air Fryer Breakfast Casserole {Frittata}

Air Fryer Breakfast Casserole is quick to prepare, versatile, healthy, and packed with veggies (and optional meat) for a fluffy and flavorful breakfast! Swap out the fillings based on season for a breakfast that will never become boring.
5 from 1 vote
Print Save Rate
Course: Breakfast
Cuisine: American Ukrainian
Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes
Servings: 4 servings
Calories: 234kcal
Author: Olena Osipov

Ingredients

  • 8 large eggs
  • 1/2 cup milk any (I use whole milk)
  • 15 brown mushrooms thinly sliced
  • 1 large red bell pepper thinly sliced
  • 1/3 cup red onion thinly sliced
  • 2 handfuls baby spinach or kale
  • 1/2 cup Parmesan cheese shredded
  • 1/2 tsp salt divided
  • Ground black pepper to taste

Instructions

  • Chop vegetables and grate cheese.
    Air Fryer Breakfast Casserole
  • Preheat air fryer at 400 degrees F for 5 minutes.
    Air Fryer Breakfast Casserole
  • Line basket of air fryer with parchment paper making sure to position it evenly in the center, so there is enough room to hold egg mixture on all sides. Trim off sticking out corners.
    Air Fryer Breakfast Casserole
  • Add mushrooms, bell pepper, red onion, 1/4 tsp salt and pepper. Air fry for 15 minutes, shaking and stirring once.
    Air Fryer Breakfast Casserole
  • In the meanwhile, in a medium bowl add eggs, milk, 1/2 tsp salt, pepper and whisk well.
    Air Fryer Breakfast Casserole
  • Remove basket from the air fryer, add spinach and stir with small spatula until a bit wilted and distributed evenly.
    Air Fryer Breakfast Casserole
  • Sprinkle with Parmesan cheese and carefully pour egg mixture on top. Bake at 300 degrees F for 20 minutes or until toothpick inserted in the middle comes out clean.
    Air Fryer Breakfast Casserole
  • Cut into 8 slices with a serrated knife and enjoy hot or cold.
    Air Fryer Breakfast Casserole

Make ahead: Par-cook the vegetables and prepare the egg mixture 1-2 days in advance and store separately in airtight containers in the fridge. When you’re ready to cook the air fryer frittata, allow to come to room temperature for 30 minutes, then continue with the recipe. It may still require a little additional cooking time due to the chilled ingredients.

    Store: Refrigerate leftovers in an airtight container for up to 5 days. Perfect for meal prep.

      Freeze: Freeze leftovers for up to 3 months. Thaw on a counter for 2-3 hours or in the fridge overnight.

        Reheat: Reheat in an air fryer at 350 degrees F for 5 minutes or in a microwave for a few minutes.

          Notes

          • What size is your air fryer? I am using large 8 quart Cosori air fryer. It fits about 1 – 1.5 lbs of wings.
          • Parchment paper sheets: For cooking in the air fryer, I love using these pre-cut 12 x 16 parchment sheets. They are very sturdy and convenient.
          • Prevent spilling: To prevent egg mixture leaking into the basket, all you have to do is make sure parchment paper is positioned in the center with enough height on each side to hold the liquids. Paper itself will not leak through.
          • Trimming off corners: Since air fryer is a mini convection oven, trimming off sticking out paper corners will prevent paper from burning.
          • Choice of cheese: I love using freshly grated Parmesan. You can also use shredded mozzarella, cheddar etc.
          • Egg whites: You can use 2 cups of liquid egg whites instead of 8 eggs if you wish.
          • Additions: For meat, use chopped bacon, sauteed or not. Cooked ground turkey, chicken or beef would work as well.
          • Other vegetables: There are tons of vegetables that you can use within this air fryer breakfast casserole. These include broccoli florets, asparagus, zucchini, shredded carrot, olives, sun-dried tomatoes, etc.
          • Make spicy by adding hot sauce or red pepper flakes to an egg mixture. Add a can of diced green chiles for Mexican version.
          • Make a frittata: Omit milk as it is the only difference between breakfast casserole and frittata.
          See recipe post for more tips and FAQs.

          Nutrition

          Serving: 2slices | Calories: 234kcal | Carbohydrates: 9g | Protein: 20g | Fat: 13g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 381mg | Sodium: 692mg | Potassium: 675mg | Fiber: 2g | Sugar: 4g | Vitamin A: 3328IU | Vitamin C: 58mg | Calcium: 276mg | Iron: 3mg
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