This post contains affiliate links. As an Amazon associate I earn qualifying purchases. Click here for more about this policy.

Healthy Denver Omelet Casserole is a protein egg bake that's low calorie, tasty and delicious! Baked in the oven, this easy breakfast casserole only requires a few ingredients and is great for meal prepping breakfast ahead of time! Low Calorie + Gluten Free + Low Carb

Denver Omelet is commonly known as a "Western Omelet." This healthy version is packed with lean protein and fresh ingredients like bell peppers, onion, ham, yogurt and cheese.

It's very easy to prepare and a great option for meal prepping or baking for a brunch or breakfast bake! In less than 30 minutes, you will have a tasty and healthy breakfast that's lower in calories and higher in lean protein.

slice of Denver omelet on a silver plate

What Makes This Denver Omelet Casserole Healthy

Here's a few reasons why I love this wholesome Denver Baked Omelet!

Simple Ingredients - All the ingredients are easy to find.
Versatile - You can make this omelette recipe your own by easily swapping ingredients (see the substitutions section for recommendations!).
Adequate Protein - My clients are always deficient in lean protein in their meals. This meal has 28 grams of lean protein per serving.
Lower Calorie - Each serving is only 287 calories. Calories are important especially if your goal is fat loss, but the composition of calories matters too. The lean protein in this recipe will keep you fuller than 287 calories of granola bar as an example. You can easily add fruit or another complex carbohydrate higher in fiber too!

Ingredients For Denver Omelet Egg Bake

Here's what you need to make this low carb Denver Omelet egg bake! For the full ingredient list with measurements, scroll to the bottom of this post.

Whole Eggs
Egg Whites
Greek yogurt or Cottage cheese
Ham
Green Bell Pepper
Red Bell Pepper
White Onion
Garlic Powder
Cheddar cheese
Green Onions

For substitution recommendations for specific ingredients, scroll to the substitution section below for my suggestions!

side by side picture of mixing bowl of eggs and vegetable and a casserole dish of unbaked eggs

How To Bake An Omelet In The Oven

Here are the steps for baking a Denver Omelet Casserole! For the full recipe, nutritional information etc. scroll to the bottom of this post to the recipe card.

You will also need a 9-inch by 13-inch casserole dish to make this recipe!

Step One - Preheat oven to 400 F. Prepare an oven safe casserole dish by spraying lightly with cooking spray.

Step Two - In a mixing bowl, whisk together the eggs, egg whites, yogurt or cottage cheese then add in the ham, bell peppers, onions, garlic powder, salt and pepper. Mix together well.

Step Three - Transfer the egg mixture from the mixing bowl to the casserole dish. Top with the shredded cheese then bake 25-28 minutes.

Step Four - Remove from the oven and let the casserole sit 15 minutes before slicing and serve. Top with green onions.

Pro Tip: If you have time, cook the veggies in a skillet briefly before mixing with the eggs and baking!

slice of egg bake with a fork on a silver plate

What To Serve With Denver Omelet

Here are some ideas for what to serve with a Denver Omelet!

Fruit
Avocado, Salsa, Pico de Galo, Guacamole
Greek yogurt or Sour Cream
Shredded Potatoes
High Fiber Bread

What To Top A Denver Omelette Egg Bake With

Here are ideas for topping your low calorie Denver egg bake!

Avocado, salsa, pico de galo, guacamole, yogurt or sour cream

Can You Make a Baked Denver Omelet Ahead?

Yes! Make this healthy Denver omelet casserole ahead and store it until you are ready to serve. Let the omelet cool completely before covering it tightly with aluminum foil or plastic wrap.

You can also prep the casserole up to the point of baking it. Place the ingredients in the prepped casserole dish, cover with foil then remove from the oven while pre-heating the oven when you are ready to bake it.

Storing Low Carb Denver Omelette

Refrigerate: Store the egg casserole in an airtight container for 3-4 days in the refrigerator.
Freeze: Make the casserole ahead of time and freeze for 3 months.
To thaw: Thaw in the refrigerator or place directly in the oven to heat.
To re-heat: Microwave a slice of Denver omelet for 30 seconds at a time until it is heated. You can also place slices on a sheet pan in the oven at 350 F for 10 minutes or until warm throughout.

Denver omelete egg bake in a white casserole dish

Substitutions For Denver Omelette Casserole

This Baked Denver Omelet is healthy, contains adequate LEAN PROTEIN, is packed with so many delicious flavors like ham, onions, peppers, and cheese. The great thing about this recipe is that you can easy customize it to you!

Here are the substitutions you can make for this Denver baked omelette. Remember when you swap ingredients, it does change the nutritional values from what you see in the recipe card below.

Egg Whites - I do NOT recommend using whole eggs in place of the egg whites. The reason why is the egg whites adds lean protein to the recipe. If you were to replace the egg whites, you would significantly reduce the lean protein of the recipe and protein is very important nutritionally. Not consuming adequate lean protein is a mistake I always see my clients making. Replacing whole eggs means you would use 3 whole eggs in place of 6 egg whites and 3 whole eggs does not have as much protein as 6 egg whites. Those 3 whole eggs also have more calories than 6 egg whites.
Whole Eggs - You can substitute the whole eggs for egg whites if you want to. Instead of 4 whole eggs, you would add 8 egg whites for a total of 14 egg whites in the recipe.
Greek yogurt / Cottage cheese - I do not recommend omitting this as it adds lean protein to the recipe. Without this, the egg bake would be deficit in lean protein and the consistency would not be as fluffy either. Dairy free yogurts are not recommended as they are mostly fat content not protein and will not add the same consistency. This brand has a diary-free yogurt that is higher in protein. It’s the only one that I’ve found dairy-free.
Ham - Canadian bacon or cooked turkey bacon could be substituted instead. Tempeh could also work.
Garlic Powder / Seasonings - You can use real garlic or minced garlic for the recipe. Paprika, red pepper flakes or chili powder would be great additions to this recipe too!
Cheese - I used low fat shredded cheese for this recipe. You can use any variety of cheese you enjoy or you can omit it or replace it with a dairy-free cheese or use nutritional yeast.
Dairy Free - Use the dairy-free brand of yogurt I mentioned above to make this Denver omelette diary-free.
Additional Fillings - This recipe is incredibly versatile. You can load up on more veggies. Zucchini, summer squash, mushrooms and spinach would be great additions!

More Healthy Egg Breakfast Casserole Recipes

Healthy Denver Omelet Casserole is a protein egg bake that's low calorie, tasty and delicious!

About Megan

Megan is a certified nutrition practitioner, author, freelance food photographer and fitness instructor living in Phoenix, Arizona. On her blog, Skinny Fitalicious she shares EASY, gluten free recipes for weight loss. Follow Megan on Facebook, Twitter, Pinterest and Instagram for the latest updates.

5 from 2 votes (1 rating without comment)

Healthy Denver Omelet Casserole {Low Cal, Low Carb, GF}