Derby Hot Brown Sliders

My neighbor brought a platter of these to our Derby Day gathering last spring, and I watched them disappear faster than the horses crossed the finish line. The brioche was warm and buttery, the turkey tender, and that Mornay sauce—creamy, cheesy, sophisticated—made everyone ask for the recipe before they'd even finished chewing. She laughed and said she'd simplified the classic Hot Brown just enough to make it manageable for a party, and suddenly I understood why this little sandwich had been a Louisville staple for nearly a century.

I made these for a small book club gathering in my kitchen one October, and the energy shifted the moment that Mornay sauce came together—the room filled with the smell of butter, cream, and nutmeg, and suddenly everyone was hovering around the oven like kids waiting for cookies. Someone opened a bottle of bourbon to pair with them, and we ended up talking through dinner about why certain foods just feel like celebration. These sliders became the unexpected heart of the evening.

Ingredients

• Brioche slider buns: These absorb the sauce beautifully without falling apart, and their subtle sweetness balances the savory layers—look for quality bakery ones if you can, as they make a real difference.
• Roasted turkey breast: High-quality deli turkey works fine, but freshly roasted has a subtle depth that elevates the whole slider.
• Cooked bacon: Cook it until it's crispy enough to snap; soft bacon gets lost in the layers and moisture.
• Fresh tomato: A ripe, in-season tomato adds brightness and prevents the slider from feeling too heavy and sauce-laden.
• Unsalted butter: Use quality butter for both the sauce and brushing the tops—it's worth it.
• All-purpose flour: This is your thickening agent, so don't skip the whisking step or you'll end up with lumps.
• Whole milk and heavy cream: The combination creates a sauce that's rich but not cloying; using only cream makes it feel one-dimensional.
• Gruyère cheese: This is the soul of the Mornay sauce—its nutty, slightly sweet flavor is irreplaceable, though sharp white cheddar works in a pinch.
• Parmesan cheese: Freshly grated adds complexity and helps the sauce set properly when it cools slightly.
• Ground nutmeg: A whisper of nutmeg in cream sauce is classic French technique, and it's subtle enough that people taste it without knowing what it is.

Instructions

Heat your oven and prep your workspace:

Set the oven to 375°F and line a baking sheet with parchment—this prevents sticking and makes cleanup painless. Having everything ready before you start cooking keeps the energy flowing.

Build the Mornay sauce with care:

Melt butter over medium heat, whisk in flour for just a minute to cook out that raw flour taste, then slowly add milk and cream while whisking constantly to avoid lumps. Once it thickens and coats the back of a spoon, remove it from heat and stir in the cheeses and seasonings gently—the residual heat will melt everything into silky perfection.

Slice and arrange your brioche:

Cut the buns in half and place bottoms on the parchment sheet, which gives you a stable base for layering. This is where the assembly line mentality kicks in.

Layer with intention:

Start with turkey on each bun bottom, then a thin tomato slice, a generous spoonful of warm Mornay sauce, and finally your crispy bacon—the order matters because each layer holds the next in place. The sauce acts as an edible glue.

Crown and brush:

Place the bun tops on each slider and use a pastry brush to lightly coat them with melted butter, which gives them that golden, appetizing finish. A light hand here prevents the buns from getting soggy.

Add the finishing touch:

Sprinkle extra Parmesan over the tops if you're feeling it—it creates little crispy pockets that catch the heat. This step is optional but worth it.

Bake until golden and heated through:

10 to 12 minutes at 375°F transforms everything into a warm, melted, gorgeous little sandwich. You'll know it's ready when the bun tops are golden and you can see a hint of the filling peeking out at the edges.

Finish and serve:

Let them rest for just a minute so the sauce sets slightly, then shower with fresh parsley and serve while everything is still warm and the cheese is at its creamiest. This is the moment people will remember.

Save

There's something about watching someone taste a food they didn't know they needed—the pause, the second bite, the smile—and that's what these sliders do. They're small enough to be approachable but impressive enough to make you feel proud of what you've created.

Why This Recipe Works

The Hot Brown has been served at the Brown Hotel in Louisville since 1926, and it's remained iconic because it's genuinely delicious—roasted turkey and crispy bacon wrapped in a silky cheese sauce is a flavor combination that just works. By scaling it down to slider size, you get all the elegance without the fork-and-knife commitment, which makes it perfect for standing and mingling at parties.

Customization and Substitutions

The beauty of these sliders is how flexible they are—I've made them with smoked turkey when I had it on hand, and once I added a tiny pinch of cayenne to the sauce for a Derby Day crowd that appreciated heat. You could also use quality deli ham if turkey doesn't appeal, or even swap in smoked salmon and dill for a completely different vibe. The Mornay sauce is your canvas, and brioche is your canvas stretcher.

Making It Ahead and Serving

I learned early on that you can assemble these completely, cover them loosely with foil, and refrigerate for up to four hours before baking—which means on party day, you're literally just sliding a tray into the oven and looking like a composed, organized person. Pair them with a simple green salad to cut through the richness, or serve alongside classic Southern sides like deviled eggs and pickled vegetables for a proper spread.

• If baking from cold, add two to three minutes to the baking time and watch for golden buns.
• These are best enjoyed immediately while the sauce is at its creamiest, but leftovers can be gently reheated in a low oven.
• Make the Mornay sauce the day before and reheat it gently on the stovetop, whisking in a splash of milk if it's thickened too much.

Save

These sliders have become my go-to for celebrations that deserve something a little special, and they've earned their place in my rotation because they deliver on both flavor and ease. Serve them warm, watch them disappear, and enjoy the quiet satisfaction of cooking something that makes people genuinely happy.

Recipe FAQs

→ What kind of cheese is used in the Mornay sauce?

The sauce combines shredded Gruyère and grated Parmesan for a rich, creamy texture and depth of flavor.

→ Can I use smoked turkey instead of roasted turkey?

Yes, smoked turkey can be used as a flavorful alternative, providing a slightly different smoky dimension.

→ How do I get the brioche buns golden and crisp?

The sliders are brushed with melted butter and baked at 375°F for 10–12 minutes, which crisps the buns and warms the filling.

→ Is it possible to prepare these sliders ahead of time?

They can be assembled in advance and baked just before serving to maintain freshness and texture.

→ What can I serve alongside these sliders?

Classic Southern sides or fresh green salads complement the sliders well for a balanced meal.

→ How can I add a little heat to the dish?

Adding a pinch of cayenne pepper to the Mornay sauce introduces a subtle spicy kick.