These Denver Omelette Egg Muffins transform the classic diner favorite into convenient, protein-packed bites perfect for busy mornings. Loaded with savory ham, colorful bell peppers, mushrooms, and cheese, these portable egg cups deliver amazing flavor in every bite. They’re perfect for meal prep, on-the-go breakfasts, or feeding a crowd with minimal effort!

Pro Tips for Making the Recipe

  • Perfect for Meal Prep: Make a batch on Sunday and enjoy hassle-free breakfasts all week long—just grab and go!
  • Customizable: Easily adapt with whatever veggies or proteins you have on hand while maintaining that classic Denver omelette flavor.
  • Protein-Packed: Each egg muffin delivers a satisfying dose of protein to keep you energized throughout your morning.
  • Family-Friendly: Kids and adults alike love these handheld breakfast bites—no plates or utensils required!
  • Versatile: Great for breakfast, brunch, lunch boxes, or even as a protein-rich snack any time of day.

Ingredients You’ll Need

  • Eggs: The star of the show, creating the perfect vessel for all those delicious fillings.
  • Ham: Adds smokiness and savory flavor—diced ham steak works beautifully for texture and taste.
  • Onion: Provides essential aromatic flavor that forms the backbone of the classic Denver omelette taste.
  • Green Bell Pepper: Brings color, crunch, and sweetness to balance the savory elements.
  • Mushrooms: Adds an earthy depth and meaty texture that makes these egg muffins extra satisfying.
  • Sharp Cheddar Cheese: Creates gooey pockets of deliciousness and helps bind everything together.
  • Olive Oil: Used for sautéing the veggies and ham to develop deeper flavors before baking.
  • Salt and Pepper: Simple seasonings that enhance all the other flavors without overwhelming them.
  • Cooking Spray: Essential for ensuring your egg muffins release easily from the tin without sticking.

Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

Looking to switch things up? Here are some delicious ways to make these egg muffins your own:

  • Southwestern Style: Add jalapeños, swap cheddar for pepper jack, and throw in some corn for a kick.
  • Mediterranean Twist: Use feta instead of cheddar, add spinach, and toss in some chopped sun-dried tomatoes.
  • Veggie Lover’s: Skip the ham and double up on vegetables with zucchini, broccoli, or sweet potato.
  • Meat Lover’s: Add crumbled bacon and breakfast sausage alongside the ham for a protein powerhouse.
  • Lightened Up: Use egg whites (about 2 egg whites per whole egg) and reduced-fat cheese for a lighter version.

How to Make Denver Omelette Egg Muffins

Step 1: Prepare Your Oven and Ingredients

Preheat your oven to 350°F. While it’s heating, dice your onion, bell pepper, mushrooms, and ham into small, even pieces. Having everything roughly the same size ensures even cooking and makes for perfect bites.

Step 2: Sauté the Ham

Heat olive oil in a large skillet over medium-high heat. Add the diced ham and cook for 5-6 minutes until it develops a lovely golden color. This step brings out the smoky flavors and creates texture. Remove the ham and set aside to cool.

Step 3: Cook the Vegetables

In the same skillet with those flavorful ham drippings, add your diced onions, bell peppers, and mushrooms. Season with salt and pepper and sauté for 8-10 minutes until they’re softened and starting to caramelize. The mushrooms should release their moisture and the onions should become translucent. Set aside to cool.

Step 4: Prepare the Egg Mixture

Crack your eggs into a large bowl and whisk until completely combined. Add the remaining salt and pepper. Once your ham and vegetables have cooled slightly, add them to the egg mixture along with the grated cheese. Stir everything together to distribute the fillings evenly.

Step 5: Fill the Muffin Tins

Spray your muffin tins generously with cooking spray—don’t skimp here! Pour the egg mixture into each cavity, filling them about ¾ of the way full. Be careful not to overfill as they will puff up during baking.

Step 6: Bake to Perfection

Place your muffin tins in the preheated oven and bake for 24-25 minutes. You’ll know they’re done when the tops are slightly puffed and the centers are set. Let them cool slightly before running a butter knife around the edges to loosen and remove them from the tin.

Pro Tips for Making the Recipe

  • Pre-cook Your Veggies: Always sauté vegetables before adding to the egg mixture—this removes excess moisture that could make your egg muffins soggy.
  • Don’t Overfill: Keep your muffin tins about ¾ full to allow room for the eggs to rise without spilling over.
  • Cool Before Storing: Let the egg muffins cool completely before storing to prevent condensation that can make them soggy.
  • Even Distribution: Make sure each muffin cup gets a good mix of veggies, ham, and cheese—nobody wants an egg muffin that’s all pepper and no ham!
  • Season in Layers: Adding some salt and pepper to the veggies while cooking and then to the eggs ensures flavor throughout every bite.

How to Serve

These versatile egg muffins can be enjoyed in numerous ways:

Breakfast Pairings:

Serve warm alongside fresh fruit, avocado toast, or a simple green salad for a complete meal.

Brunch Spread:

Include these on a brunch buffet alongside pastries, fruit platters, and mimosas for a crowd-pleasing spread.

Lunch Option:

Pack with a side salad and some whole grain crackers for a protein-rich midday meal that won’t leave you hungry.

Kid-Friendly Meal:

Pair with apple slices or carrot sticks for a balanced breakfast or lunch that kids will actually eat.

Make Ahead and Storage

Storing Leftovers

Once cooled, store egg muffins in an airtight container in the refrigerator for 3-4 days. Layer them with parchment paper to prevent sticking if you need to stack them.

Freezing

These egg muffins freeze beautifully! Wrap each cooled muffin individually in plastic wrap, then place in a freezer-safe bag or container. They’ll keep for up to 2 months in the freezer.

Reheating

From refrigerated: Microwave for 20-30 seconds or until warmed through.
From frozen: Unwrap, place on a microwave-safe plate, cover with a damp paper towel, and microwave for 1-2 minutes. You can also reheat in a 350°F oven for about 10 minutes if you prefer a crisper texture.

FAQs

  1. Can I make this recipe with just egg whites?

    Absolutely! Replace each whole egg with 2 egg whites for a lighter version. You may need to adjust the cooking time slightly as egg whites can cook faster than whole eggs.

  2. Why did my egg muffins sink after baking?

    This typically happens when there’s too much moisture in your vegetables or when the muffins are removed from the oven before they’re fully set. Make sure to sauté your veggies well to remove excess moisture, and check that the centers are completely set before removing from the oven.

  3. Can I use a silicone muffin pan instead of a metal one?

    Yes! Silicone pans work wonderfully for egg muffins and make removal even easier. You may need to add a minute or two to the baking time, and it helps to place the silicone mold on a baking sheet for stability.

  4. How can I prevent my egg muffins from sticking to the pan?

    Be generous with the cooking spray, making sure to coat the sides as well as the bottom of each muffin cavity. You can also use parchment paper liners or silicone baking cups for extra insurance against sticking.

Final Thoughts

These Denver Omelette Egg Muffins are truly a game-changer for busy mornings. They take all the delicious flavors of a classic diner omelette and transform them into convenient, portable bites that fit your on-the-go lifestyle. With protein, veggies, and incredible flavor in every bite, they’re sure to become a regular in your breakfast rotation. Give them a try this weekend—your future hungry self will thank you!

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Denver Omelette Egg Muffins Recipe

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  • Author: Evelyn
  • Prep Time: 5 minutes
  • Cook Time: 40 minutes
  • Total Time: 45 minutes
  • Yield: 16 servings 1x
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Description

These Denver Omelette Egg Muffins are a convenient and protein-packed breakfast option that’s perfect for meal prep or serving a crowd. Loaded with ham, vegetables, and cheese, they are flavorful and easy to make.


Ingredients

Units Scale

Produce

    • 1 small onion (any color, can substitute 2 shallots)
    • 1 green bell pepper (can substitute red, yellow, or orange pepper)
    • 1 8 oz. package cremini mushrooms or button mushrooms

Eggs and Dairy

    • 10 eggs
    • 1 cup sharp cheddar cheese, grated (or cheese of choice)

Meat

    • 2 cups diced ham (such as ham steak)

Pantry Staples

  • 2 Tbsp. olive oil
  • 1/2 tsp. kosher salt (divided)
  • 1/2 tsp. pepper (divided)
  • Cooking spray

Instructions

  1. Preheat the Oven: Heat oven to 350 degrees Fahrenheit.
  2. Prepare the Vegetables: Mince 1 small onion (or substitute 2 shallots) and 1 green bell pepper (or substitute red, orange, or yellow bell pepper). Wipe any dirt off the mushrooms and chop into small pieces. Discard or use the stems as desired.
  3. Dice the Ham: Dice 2 cups of cooked ham into cubes. Ensure that the ham and vegetables are cut to relatively the same size for even cooking.
  4. Grate the Cheese: Grate 1 cup of sharp cheddar cheese or your preferred cheese.
  5. Sauté the Ham: Heat a large skillet over medium-high heat and add 2 Tbsp. of olive oil. Once heated, add the diced ham to the skillet. Sauté for 5-6 minutes, stirring often. Remove the sautéed ham from the skillet and set aside to cool.
  6. Sauté the Vegetables: Add the minced onion, bell pepper, and mushrooms to the skillet along with ¼ tsp. each of kosher salt and pepper. Sauté the vegetables for 8-10 minutes, stirring frequently. Remove the skillet from heat and allow the cooked vegetables to cool.
  7. Prepare the Egg Mixture: Crack 10 eggs into a large bowl and add ¼ tsp. each of kosher salt and pepper. Whisk until fully combined. Stir in the cooled ham, sautéed vegetables, and grated cheese until well mixed.
  8. Prepare the Muffin Tins: Generously spray 2 muffin tins with cooking spray to prevent sticking. Pour an equal amount of the egg mixture into each muffin cavity, being careful not to overfill. This recipe yields 16-18 egg muffins, so some muffin cavities will remain empty.
  9. Bake the Muffins: Place the muffin tins in the preheated oven and bake for 24-25 minutes, or until the egg muffins are set.
  10. Cool and Remove: Remove the muffin tins from the oven and allow to cool slightly. Once cooled, run a butter knife along the edges and carefully remove the muffins.
  11. Serve or Store: Enjoy the muffins immediately or allow them to cool completely. Place them in an airtight container and refrigerate for 3-4 days.

Notes

  • This recipe yields 16-18 egg muffins. Fill each muffin cavity evenly to ensure even cooking and avoid overfilling, as it may cause spills in the oven.
  • If concerned about spills, place the muffin tins on a baking sheet to catch any overflow.
  • Feel free to cut this recipe in half if needed.

Nutrition

  • Serving Size: 1 muffin
  • Calories: 120
  • Sugar: 1g
  • Sodium: 310mg
  • Fat: 8g
  • Saturated Fat: 3g
  • Unsaturated Fat: 4.5g
  • Trans Fat: 0g
  • Carbohydrates: 2g
  • Fiber: 0.5g
  • Protein: 10g
  • Cholesterol: 115mg

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