This oven baked omelet is a delightful twist on the classic stovetop version. It's perfect for a hearty breakfast or a quick dinner, and it's incredibly easy to prepare. With a combination of eggs, milk, cheese, and fresh vegetables, this dish is both nutritious and satisfying. Plus, baking it in the oven means you can serve it straight from the dish, making cleanup a breeze.
If you don't usually keep bell pepper or onion on hand, you might need to pick these up at the supermarket. Fresh produce sections will have a variety of bell peppers to choose from, and you can select either red, yellow, or green based on your preference. Onions are typically found in the same area, and a standard yellow or white onion will work perfectly for this recipe.

Ingredients For Oven Baked Omelet Recipe
Eggs: The base of the omelet, providing protein and structure.
Milk: Adds creaminess and helps to blend the ingredients together.
Cheese: Shredded cheese adds a rich, savory flavor and helps to bind the omelet.
Bell pepper: Diced for a sweet and crunchy texture, adding color and nutrients.
Onion: Diced to add a subtle, savory depth of flavor.
Salt: Enhances the overall flavor of the dish.
Pepper: Adds a touch of heat and complexity to the omelet.
Technique Tip for This Recipe
To achieve a fluffier omelet, separate the egg whites from the yolks before whisking. Beat the egg whites until they form soft peaks, then gently fold them back into the egg yolk mixture. This will incorporate more air into the omelet, resulting in a lighter and more airy texture.
Suggested Side Dishes
Alternative Ingredients
eggs - Substitute with egg whites: For a lower cholesterol option, use egg whites instead of whole eggs.
eggs - Substitute with silken tofu: For a vegan alternative, silken tofu can mimic the texture of eggs.
milk - Substitute with almond milk: Almond milk provides a dairy-free option with a slightly nutty flavor.
milk - Substitute with oat milk: Oat milk is a creamy, non-dairy alternative that works well in baked dishes.
shredded cheese - Substitute with nutritional yeast: Nutritional yeast offers a cheesy flavor without dairy, suitable for vegans.
shredded cheese - Substitute with vegan cheese: Vegan cheese can provide a similar texture and flavor for those avoiding dairy.
bell pepper - Substitute with zucchini: Zucchini adds a different texture and mild flavor, suitable for those who prefer a less sweet vegetable.
bell pepper - Substitute with mushrooms: Mushrooms add an earthy flavor and meaty texture, enhancing the omelet's depth.
onion - Substitute with shallots: Shallots offer a milder, slightly sweeter flavor compared to onions.
onion - Substitute with leeks: Leeks provide a subtle onion flavor with a hint of sweetness, adding complexity to the dish.
salt - Substitute with soy sauce: Soy sauce can add a savory umami flavor, reducing the need for additional salt.
pepper - Substitute with cayenne pepper: Cayenne pepper adds a spicy kick, enhancing the overall flavor profile.
Other Alternative Recipes Similar to This Dish
How To Store / Freeze This Recipe
Allow the oven baked omelet to cool completely before storing. This helps prevent condensation, which can make the omelet soggy.
For short-term storage, transfer the omelet to an airtight container. Refrigerate for up to 3-4 days. This keeps the eggs fresh and the vegetables crisp.
If you plan to store the omelet for a longer period, freezing is a great option. Cut the omelet into individual portions for easy reheating.
Wrap each portion tightly in plastic wrap or aluminum foil. This prevents freezer burn and maintains the omelet's flavor.
Place the wrapped portions in a freezer-safe bag or container. Label with the date to keep track of freshness.
When ready to enjoy, thaw the omelet portions in the refrigerator overnight. This ensures even reheating.
Reheat the omelet in the microwave or oven. For the microwave, place on a microwave-safe plate and heat for 1-2 minutes. For the oven, preheat to 350°F (175°C) and bake for 10-15 minutes, or until heated through.
Enjoy your oven baked omelet with a side of fresh fruit or a green salad for a complete meal.
How To Reheat Leftovers
Microwave Method:
- Place a slice of the oven baked omelet on a microwave-safe plate.
- Cover it with a damp paper towel to retain moisture.
- Heat on medium power for 1-2 minutes, checking halfway through to ensure it heats evenly.
- Let it sit for a minute before enjoying.
Oven Method:
- Preheat your oven to 350°F (175°C).
- Place the omelet slice in an oven-safe dish.
- Cover the dish with aluminum foil to prevent it from drying out.
- Bake for about 10-15 minutes, or until heated through.
- Remove from the oven and let it cool slightly before serving.
Stovetop Method:
- Heat a non-stick skillet over medium-low heat.
- Add a small amount of olive oil or butter to the skillet.
- Place the omelet slice in the skillet and cover with a lid.
- Heat for about 5 minutes, flipping halfway through to ensure even heating.
- Once warmed, transfer to a plate and serve immediately.
Toaster Oven Method:
- Preheat the toaster oven to 350°F (175°C).
- Place the omelet slice on a piece of aluminum foil or a small baking tray.
- Heat for 10-12 minutes, checking occasionally to avoid overcooking.
- Let it cool slightly before enjoying.
Air Fryer Method:
- Preheat the air fryer to 300°F (150°C).
- Place the omelet slice in the air fryer basket.
- Heat for 5-7 minutes, checking halfway through to ensure it heats evenly.
- Remove from the air fryer and let it cool slightly before serving.
Best Tools for This Recipe
Oven: Used to bake the omelet at a consistent temperature of 375°F (190°C).
Mixing bowl: Used to whisk together the eggs, milk, and other ingredients.
Whisk: Used to blend the eggs and milk smoothly.
Measuring cup: Used to measure out ½ cup of milk accurately.
Cheese grater: Used to shred the cheese if it is not pre-shredded.
Cutting board: Used as a surface to dice the bell pepper and onion.
Knife: Used to dice the bell pepper and onion.
Baking dish: Used to pour the egg mixture into for baking.
Cooking spray: Used to grease the baking dish to prevent the omelet from sticking.
Oven mitts: Used to safely handle the hot baking dish when removing it from the oven.
Spatula: Used to slice and serve the baked omelet.
How to Save Time on Making This Recipe
Pre-chop vegetables: Dice the bell pepper and onion the night before and store them in the fridge.
Use pre-shredded cheese: Save time by using pre-shredded cheese instead of shredding it yourself.
Mix in advance: Whisk the eggs and milk together and store the mixture in the fridge overnight.
One-pan method: Use a greased baking dish that can go from oven to table to minimize cleanup.
Batch cooking: Double the recipe and bake in a larger dish to have leftovers for the next day.

Oven Baked Omelet
Ingredients
Main Ingredients
- 6 eggs
- ½ cup milk
- 1 cup shredded cheese
- 1 bell pepper, diced
- ½ onion, diced
- to taste salt and pepper
Instructions
- Preheat your oven to 375°F (190°C).
- In a mixing bowl, whisk together the eggs and milk.
- Add the shredded cheese, diced bell pepper, and diced onion to the egg mixture. Season with salt and pepper to taste.
- Pour the mixture into a greased baking dish.
- Bake in the preheated oven for 25 minutes, or until the omelet is set and golden brown on top.
- Let it cool slightly before slicing and serving.
Nutritional Value
Keywords
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