Kentucky Derby Hot Brown Sliders

There's something about Derby Day that makes you want to do things a little fancier than usual, and a few years back I found myself staring at leftover roasted turkey, a wedge of sharp cheddar, and wondering if I could scale down the legendary Hot Brown into something you could actually eat standing up at a party. The result was these brioche sliders topped with that silky Mornay sauce, bacon, and tomato—proof that sometimes the best recipes come from refusing to waste good ingredients and a healthy dose of creative stubbornness.

I made these for a small Derby watch party and watched my neighbor, who normally picks at appetizers, go back for a third one and then apologize for being greedy. That's when I knew the recipe had something special—it's the kind of dish that makes people forget their manners in the best way possible.

Ingredients

• Mini brioche slider buns: Quality matters here because they're doing most of the structural work; look for ones that feel soft and slightly sweet, and avoid anything rock-hard from sitting in the bakery case too long.
• Roasted turkey breast: Freshly roasted is ideal, but good-quality deli turkey works in a pinch—just avoid the super-thin sliced stuff that falls apart when you layer it.
• Thick-cut bacon: This isn't the time for wimpy bacon; you need pieces substantial enough to actually taste and hold their shape under the broiler.
• Roma tomatoes: They have fewer seeds and less water than other varieties, which means your sliders won't get soggy—a lesson I learned the hard way.
• Unsalted butter: For the Mornay and toasting, because you're controlling the salt yourself.
• All-purpose flour: Creates the roux base for your sauce; don't skip this or you'll end up with grainy, broken sauce.
• Whole milk and heavy cream: The combination gives you richness without being overwhelming; using all cream makes the sauce too heavy.
• Sharp white cheddar cheese: The sharpness cuts through the richness; mild cheddar will make the sauce taste flat and one-dimensional.
• Parmesan cheese: A secret weapon that adds depth and prevents the sauce from being too one-note cheesy.
• Ground nutmeg: Just a whisper of it—this is what separates a great Mornay from a generic cheese sauce.
• Fresh parsley: Bright, herbaceous, and makes everything look intentional instead of rushed.

Instructions

Make your Mornay base:

Melt your butter over medium heat and whisk in the flour, letting it bubble gently for a minute or two until it smells toasty but before it takes on any color. Slowly pour in the milk and cream while whisking constantly—this is where patience matters because rushing it creates lumps that no amount of whisking can fix.

Build the sauce:

Once your base has thickened to coat the back of a spoon, remove it from heat and stir in both cheeses, letting them melt completely before seasoning with nutmeg, salt, and pepper. Taste it and adjust—this is your moment to get it exactly how you want it.

Toast those buns:

In a large skillet with melted butter, place your brioche bun halves cut-side down and let them turn golden brown, which takes just a minute or two. You're not trying to toast them to crispness; you want a golden exterior that still has some give.

Layer and assemble:

On each toasted bottom bun half, stack a slice of turkey, a slice of tomato, about a tablespoon of warm Mornay, and half a slice of bacon. Arrange them on a baking sheet, and at this point you can refrigerate them until you're ready to broil.

Broil until bubbly:

Position your oven rack about 4 inches from the broiler element, preheat it, and slide your sliders under for 2 to 3 minutes until the sauce is bubbling at the edges and starting to turn golden. Watch them because broilers are moody and every one behaves differently.

Finish and serve:

Remove from the oven, sprinkle with fresh parsley and a tiny pinch of smoked paprika if you're feeling fancy, then carefully crown each slider with its brioche top. Serve immediately while everything is still warm and the sauce hasn't set.

Save

These sliders became the thing people texted me about days later, asking for the recipe and confessing they'd already made them twice. There's real magic in taking something iconic and making it small enough to fit in someone's hand while still tasting like the real deal.

Why The Mornay Matters

The Mornay sauce is what separates these from just being fancy sandwiches—it's rich, it's silky, and it pulls the whole thing together with warmth and umami depth. Once you master this sauce, you'll find yourself making it for vegetables, chicken, pasta, and anything else that needs a creamy, sophisticated blanket.

Making Them Ahead

You can assemble these sliders up to 4 hours before guests arrive and keep them covered in the refrigerator; just add a couple of minutes to the broiling time since they'll be cold. This is what makes them perfect for entertaining because the actual cooking happens in the final minutes when you're already a little flustered.

Variations Worth Trying

Once you have the basic formula down, you can play with it endlessly—swap in different cheeses, add crispy prosciutto instead of bacon, or pile on caramelized onions for depth. The beauty is that the brioche bun and Mornay sauce are flexible enough to support almost anything you want to layer on top.

• Try adding a thin slice of tomato paste mixed into the Mornay for a subtle depth that keeps people guessing.
• Stir a tiny spoonful of Dijon mustard into the sauce if you want something with more personality and punch.
• For a vegetarian version, use sautéed mushrooms and spinach where the turkey would go—the Mornay sauce makes everything taste special.

Save

These sliders prove that sometimes the best entertaining happens when you're not overthinking it—just good ingredients, a classic sauce, and the confidence to make something legendary fit into your hand. Once you make them, they'll become your go-to move for any gathering worth remembering.

Recipe FAQs

→ What is the best way to make the Mornay sauce smooth?

Whisking the flour and butter mixture constantly before gradually adding milk and cream helps prevent lumps and creates a silky smooth sauce.

→ Can I use different cheeses for the Mornay sauce?

Sharp white cheddar and Parmesan provide a classic flavor, but you can experiment with Gruyère or fontina for a slightly different taste.

→ How do I keep the slider buns from becoming soggy?

Toasting the brioche buns with butter until golden helps create a sturdy base that holds layers and resists sogginess.

→ Is there a vegetarian alternative for these sliders?

Yes, substitute turkey and bacon with sautéed mushrooms or roasted vegetables to maintain savory flavors and texture.

→ What beverages pair well with these sliders?

Mint juleps and crisp Chardonnay complement the rich layers and enhance the overall indulgent experience.