Fairfax Breakfast Sandwich Eggslut

This indulgent Fairfax Breakfast Sandwich brings the famous Eggslut experience right to your kitchen. Pillowy scrambled eggs, sweet caramelized onions, and gooey melted cheese come together on a buttery brioche bun for a breakfast that feels like a special occasion every morning.

I first attempted this recipe after waiting in a two-hour line at the original Eggslut location. The moment I recreated it at home, my Sunday mornings were forever changed, and now my family expects these sandwiches whenever we have guests staying over.

Ingredients

• Brioche bun: creates the perfect pillowy foundation with a subtle sweetness that complements the savory fillings
• Eggs: use three large ones for the ideal creamy consistency, farm-fresh makes a noticeable difference
• Yellow onion: caramelizes beautifully, adding natural sweetness and complexity
• Unsalted butter: allows you to control the saltiness while adding richness to every component
• Cheddar cheese: provides the perfect melt and sharp flavor contrast, look for aged varieties for more character
• Sriracha mayo: brings a subtle heat that balances the richness, adjust ratios to your spice preference
• Fresh chives: add a mild onion flavor and beautiful color, spring for the fresh ones rather than dried

Step-by-Step Instructions

Caramelize the Onions:

Start with medium heat adding oil and sliced onions to your skillet. The key is adding that pinch of salt and tablespoon of butter immediately, which helps draw out moisture. Reduce to low heat and be patient, stirring every few minutes until they become soft and golden. The water addition is crucial for deglazing, scraping up those flavorful brown bits from the pan. Perfect caramelization takes about 10 minutes.

Create Creamy Scrambled Eggs:

Start with eggs in a cold skillet for the creamiest texture. Scramble them before adding heat, then incorporate the butter as you place over medium-low heat. The continuous stirring prevents any browning while developing small, tender curds. Adding chives and salt at the right moment ensures even distribution. Pull them off heat when slightly underdone as they will continue cooking.

Mix the Signature Sauce:

Combine Sriracha and mayonnaise in that precise 1:2 ratio for the perfect balance of creaminess and heat. Make sure to blend thoroughly until the color is uniform throughout. This simple step creates a distinctive flavor that elevates the entire sandwich.

Assemble with Care:

Toast your brioche bun with butter until golden but not overdone. Spread sauce generously on both halves, then add the warm eggs in an even layer. The cheese melting technique is essential, giving it just enough heat to soften without completely liquefying. Crown with those gorgeous caramelized onions, aiming for even distribution.

The caramelized onions are truly the unsung hero of this sandwich. My grandmother taught me to add a tiny pinch of sugar to speed up the caramelization process, and I've been using that trick for years. The smell of those onions cooking always reminds me of Sunday mornings at her house.

Perfecting Your Eggs

The signature element of this sandwich is the softly scrambled eggs with their custardy texture. The key is removing them from heat while still slightly wet, as residual heat continues cooking them. I learned through many attempts that high heat is the enemy of creamy eggs. Keep the temperature low and your patience high for the best results.

Make It Your Own

This sandwich welcomes thoughtful customization. Try swapping cheddar for gruyère for a nuttier flavor profile, or gouda for something smokier. Add avocado slices for extra creaminess, or crispy bacon for texture contrast. For a spicier version, increase the Sriracha or add fresh jalapeño slices. The brioche can be substituted with a croissant for an even more indulgent experience, though nothing beats the original.

Prep Ahead Strategy

While this sandwich is best enjoyed fresh, several components can be prepared ahead of time. Caramelize onions up to three days in advance and refrigerate in an airtight container. The Sriracha mayo keeps well for a week. For morning efficiency, measure and prepare all ingredients the night before, including slicing the onions and portioning the butter. This turns morning assembly into a quick 10-minute process rather than the full 20 minutes.

Common Questions About This Recipe

→ Can I prepare caramelized onions ahead of time?

Yes, caramelized onions can be made in advance and refrigerated for up to three days. Warm them gently before assembling your sandwich.

→ What's the secret to creamy eggs in this dish?

Start with cold eggs in an unheated pan, mix well, and cook low and slow while stirring continuously. Add butter for extra creaminess.

→ Are there substitutes for brioche buns?

Soft rolls like potato buns or milk bread work well if brioche isn't available. These keep the sandwich tender and flavorful.

→ How spicy is the sriracha mayo?

The sriracha mayo adds a gentle heat balanced by creamy mayonnaise. Adjust the amount of sriracha to suit your preference.

→ Can I add bacon or sausage?

Absolutely—both bacon and sausage make delicious additions, bringing extra flavor and heartiness to your breakfast sandwich.