If you’re craving a breakfast that feels like a warm hug in sandwich form, the Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe is exactly what you need. This sandwich boasts fluffy scrambled eggs cooked to perfection, a hint of tangy heat from sriracha mayo, sweet caramelized onions, and melty cheddar, all nestled in a buttery brioche bun. Every bite brings a satisfying combination of flavors and textures that feel both indulgent and wholesome. It’s the kind of morning treat that you’ll want to make again and again, whether for a weekend brunch or a special weekday breakfast to kickstart your day.

Ingredients You’ll Need

The image shows ingredients for a dish placed on a white marbled texture. There are two golden-brown round buns, one whole and one sliced open to show its soft yellow inside, placed on a white cloth. Next to the buns is a glass bowl holding three smooth, white eggs. A whole onion with pale yellow skin is nearby. To the left, a glass bowl contains three butter cubes with a pale yellow color, and two slices of yellow cheese rest on brown paper next to a silver whisk. Photo taken with an iphone --ar 4:5 --v 7

Getting this sandwich right is all about simplicity and quality ingredients. Each item plays a crucial role in building layers of flavor—from the softness of the brioche buns to the richness of the eggs and the zingy sauce that ties it all together.

Brioche Buns: These provide a buttery, tender base that soaks up all the delicious juices without falling apart.
Large Eggs (6): The stars of the show, ensuring fluffy and creamy scrambled eggs that feel indulgent.
White Onions (2): Slowly caramelized to bring natural sweetness and a subtle depth of flavor.
Butter (4 tbsp): Used both for cooking the onions and the eggs, adding richness and a smooth texture.
Mayonnaise (1 cup): Blended into the sriracha sauce for creamy heat that wakes up every bite.
Sriracha Sauce (2 tbsp): Offers just the right amount of spicy kick without overpowering the other flavors.
Chives (2 tsp): Fresh and mild onion flavor that brightens the sandwich.
Cheddar Cheese Slices (2): Melted gooey goodness that adds a sharp, creamy contrast to the eggs and sauce.

How to Make Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe

Step 1: Caramelize the Onions

Start by peeling and thinly slicing the white onions. Heat 2 tablespoons of butter in a skillet over medium-low heat and add the onions. Cook them slowly for about 20–25 minutes, stirring occasionally, until they turn a rich golden brown and become irresistibly sweet. This step creates the savory-sweet foundation of your sandwich that balances the richness of the eggs perfectly.

Step 2: Prepare the Sriracha Mayo

While the onions are caramelizing, mix the mayonnaise and sriracha sauce in a small bowl. Stir until fully combined, then fold in the chopped chives. This spicy, creamy spread will add a flavorful punch, giving the sandwich its signature tang and zest.

Step 3: Cook the Scrambled Eggs

Crack the 6 eggs into a bowl and whisk gently. Melt 2 tablespoons of butter in a non-stick pan over low heat. Pour in the eggs and cook slowly, stirring frequently with a spatula to create soft, creamy curds. Patience is key here—low and slow cooking ensures that the eggs stay tender and luscious, not rubbery or dry.

Step 4: Toast the Brioche Buns

Slice the brioche buns in half and toast them lightly either in a toaster or on a dry skillet until golden. This adds a slight crunch and helps the buns hold up to the moist ingredients without becoming soggy.

Step 5: Assemble the Sandwich

Spread a generous layer of the sriracha mayo on both bun halves. Pile on the caramelized onions, then add the creamy scrambled eggs. Top each sandwich with a slice of cheddar cheese while the eggs are still warm—this ensures the cheese melts beautifully. Close the sandwich and press gently to combine all those irresistible layers.

How to Serve Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe

A sandwich sits on a round white plate, placed on a white marbled surface with a white cloth underneath. The sandwich has three main layers: the bottom layer is lightly toasted bun with fluffy yellow scrambled eggs, the middle layer is melted bright orange cheese smoothly covering the eggs, and the top layer is caramelized brown onions piled high, covered by a shiny golden toasted bun top. In the background, a white cup filled with dark coffee sits on a wooden coaster, and some green leaves blur softly behind it. The photo taken with an iphone --ar 4:5 --v 7

Garnishes

Add a sprinkle of freshly chopped chives or a few extra dashes of sriracha on the side to brighten the plate and give guests the option for more heat. A small handful of microgreens or arugula can add a fresh peppery note if you feel adventurous.

Side Dishes

This sandwich pairs wonderfully with simple sides like crispy hash browns, a fresh fruit salad, or even a light green salad dressed with lemon vinaigrette. These sides keep the meal balanced and let the bold flavors of the Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe shine.

Creative Ways to Present

Try cutting the sandwich diagonally to reveal the vibrant layers inside, then secure with a toothpick for easy eating. Serving it on a rustic wooden board with colorful napkins can elevate the breakfast experience, making it feel like a casual cafe treat at home.

Make Ahead and Storage

Storing Leftovers

If you have leftovers, wrap the sandwich tightly in plastic wrap or store in an airtight container in the refrigerator. It’s best eaten within 2 days to keep the eggs fresh and the bread soft.

Freezing

While this sandwich is best fresh, you can freeze the scrambled eggs and caramelized onions separately in freezer-safe containers for up to one month. Brioche buns freeze well too; just thaw and lightly toast before assembling the sandwich again.

Reheating

Reheat the eggs and onions gently in a non-stick pan over low heat to avoid drying them out. Toast the buns fresh for the best texture. Once warm, reassemble with fresh sriracha mayo and cheese, allowing the cheese to melt slightly from the residual heat.

FAQs

Can I make the Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe vegan?

Absolutely! Swap out the eggs for tofu scramble, use vegan mayonnaise, and replace the cheddar cheese with plant-based cheese. Also, use vegan butter for caramelizing the onions and toasting the buns for a fully vegan-friendly sandwich.

What kind of cheddar cheese works best?

A sharp or mild white cheddar both work beautifully. Sharp cheddar adds extra tang and depth, while mild cheddar gives creaminess without overpowering the eggs. Choose what suits your taste!

Is it necessary to caramelize the onions?

Caramelized onions add a sweetness and complexity that really takes the sandwich over the top, but if you’re short on time, lightly sautéed onions will still lend a nice flavor. For the full Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe experience, don’t skip this step!

Can I prepare parts of the sandwich the night before?

Yes, caramelize the onions and make the sriracha mayo ahead of time to save morning prep. Scramble the eggs fresh for the best texture and assemble just before eating to keep the buns from getting soggy.

What’s the best way to get fluffy scrambled eggs?

Cook the eggs low and slow on gentle heat, stirring frequently and removing them from the heat just before fully set. The residual warmth finishes cooking them, keeping the texture soft and creamy.

Final Thoughts

There’s something truly special about the Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe that makes mornings feel celebratory and comforting all at once. With its perfect balance of rich eggs, sweet onions, spicy mayo, and melty cheese in a soft brioche bun, this sandwich quickly becomes a treasured favorite. Give it a try and watch how it transforms your breakfast routine into something worth savoring.

Fairfax Breakfast Sandwich (Eggslut Copycat) Recipe

Print Recipe

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This Fairfax Breakfast Sandwich is a delicious egg-centric morning treat inspired by the famous Eggslut recipe. Featuring buttery brioche buns, perfectly cooked eggs, caramelized onions, creamy sriracha mayo, and melted cheddar cheese, this sandwich is packed with flavor and perfect for an indulgent breakfast or brunch.

Author: Julia
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes
Yield: 2 sandwiches
Category: Breakfast
Method: Stovetop
Cuisine: American

Ingredients

Buns and Cheese

2 Brioche Buns
2 slices Cheddar Cheese

Eggs and Onion

6 large Eggs
2 White Onions
4 tbsp Butter

Spicy Mayo

1 cup Mayonnaise
2 tbsp Sriracha Sauce
2 tsp Chives

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Instructions

Caramelize the Onions: Peel and thinly slice the white onions. In a skillet over medium heat, melt 2 tablespoons of butter and add the onions. Cook slowly for about 20-25 minutes, stirring occasionally until the onions are soft, caramelized, and golden brown. Remove from heat and set aside.
Prepare the Spicy Mayo: In a small bowl, combine the mayonnaise, Sriracha sauce, and chopped chives. Mix well and refrigerate until ready to use.
Cook the Eggs: In the same skillet, melt the remaining 2 tablespoons of butter over medium heat. Crack the eggs into the pan and cook them gently to your preference—soft scrambled or sunny side up works best. Season with salt and pepper. Alternatively, create a creamy, soft scrambled style to mimic the original Fairfax sandwich texture.
Toast the Buns: Slice the brioche buns in half and toast them lightly in a separate pan or under a broiler, until golden brown and slightly crisp.
Assemble the Sandwich: Spread a generous layer of the prepared spicy mayo on both halves of the toasted brioche buns. Layer the caramelized onions on the bottom bun, then add the cooked eggs. Place a slice of cheddar cheese on top of the eggs so it slightly melts from the residual heat. Finish with the top bun.
Serve Immediately: Serve your Fairfax Breakfast Sandwich warm for the best taste and texture. It pairs wonderfully with fresh fruit or breakfast potatoes.

Notes

For extra creaminess, you can add a slice of avocado or an additional layer of melted cheese.
Use a non-stick skillet to make egg cooking easier and avoid sticking.
Adjust the Sriracha amount in the mayo to your preferred spice level.
Caramelizing onions takes time but adds a rich sweetness critical to the sandwich’s flavor profile.
This sandwich is best eaten fresh but leftovers can be stored wrapped in foil for up to 1 day.