
The provided nutrition information is automatically calculated. Accuracy is not guaranteed.
This fluffy Oven-Baked Western Omelet Casserole is the easiest way to make a Western omelet. It's the ideal make-ahead breakfast casserole with eggs, tender ham, bell peppers, and mushrooms. This family favorite is perfect for busy mornings!
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This breakfast egg casserole is an EASY recipe that can be made ahead of time and refrigerated, just like this Eggs Benedict Casserole with Hollandaise Sauce or this Bisquick Breakfast Casserole.
And there's no standing at the stove cooking a traditional omelet like my Spinach Mushroom Omelette With Feta Cheese.
For another great make-ahead brunch option, check out the Best Spinach and Bacon Quiche - perfect for holiday mornings!
Make this Western omelette using simple ingredients from your local grocery store.
See the printable recipe card for exact measurements and a complete list of ingredients.
Step 1: Preheat your oven to 350 degrees F. Use a whisk or hand mixer to beat eggs in a large mixing bowl.
Step 2: Add milk, seasoning salt, and black pepper to the fluffy eggs. Whisk to combine.
Step 3: Add the diced ham and shredded cheddar cheese.
Step 4: Add the bell peppers and mushrooms. Stir to combine.
Step 5: Pour the egg mixture into a greased 9 x 12 baking dish or large skillet.
Step 6: Bake for 45 minutes in the preheated oven until the top is golden brown and the eggs are set. Cut the casserole into squares and serve immediately.
This baked Denver omelet casserole is easy to modify to suit your tastes.
Serve this Western baked omelet with:
Yes, you can substitute whole eggs with egg whites if you want a lower-calorie option. Just be aware that the texture may be slightly different.
Yes, you can make this omelet casserole ahead of time, cover it with plastic wrap, and store it in the fridge. Reheat it in the oven or microwave before serving.
The omelet is cooked when it is puffed up, golden brown and a toothpick inserted in the center comes out clean. This should take about 45 minutes in the oven.
Yes, you can adjust the seasoning to your liking. You can add more salt, pepper, or other spices.
If you like this Fluffy Oven-Baked Omelet Casserole, please take a moment to leave a star rating 🌟🌟🌟🌟🌟 and share it on social media!
The provided nutrition information is automatically calculated. Accuracy is not guaranteed.
Lynn says
I've made this a few times now and always comes out perfectly. I use red, orange and green bell peppers, and top with green onions. I stir halfway through, and cook it at 355 since my oven seems to take longer to cook this. Thank you for the awesome recipe!!
Jeri Walker says
I'm so glad you like this recipe, Lynn! Thank you for sharing your tips, and thank you for coming back to rate the recipe and leaving a comment! I appreciate it! 🙂
Brenda says
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!
Jeri says
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! 🙂
Mihaela | https://theworldisanoyster.com/ says
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!
Jean says
when I first saw the photo I knew it already looks delicious and can be served on occasions too!
Nora says
Yum! This looks so delicious! Can't wait to try it out and have a bite! Thank you for sharing!
Freya says
How delicious and cheesy this looks! And so easy too!
Kay says
A great recipe that even my fussy eater daughter enjoyed! Is now a weekly meal in our house.
Amy says
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.
Linda says
This omelet casserole is delicious! So flavorful and easy to prep and clean up.