Kentucky Hot Brown Sliders

These warm, buttery Kentucky Hot Brown Sliders pack all the rich, decadent flavors of the classic open-faced Southern sandwich into a crowd-pleasing, bite-sized party roll.

Why This Recipe Works:

• Pre-toasting the buns creates a sturdy crust that resists sogginess.
• A Mornay sauce stabilized with a proper roux ensures a velvety, emulsified cheese drape.
• Oven-baking melts the cheese and crisps the bacon simultaneously for perfect texture contrast.

I still remember the exact shade of yellow on my kitchen walls when I tried making a traditional Kentucky Hot Brown for the first time. I watched in horror as the heavy Mornay sauce completely liquefied my toast into a sad, soggy mush.

It was a total disaster.

Traditional open-faced sandwiches rely on thick-cut toast. But when scaled down to party size, standard white rolls turn into a sponge and disintegrate under your fingers.

The secret to keeping these sliders structurally sound lies in the starch gelatinization of the bun and a highly stabilized Mornay sauce. By using sweet Hawaiian rolls—which have a tighter crumb and higher sugar content—and lightly toasting the interiors first, we create a hydrophobic barrier that keeps the sauce where it belongs.

Trust me on this one, you do not need fancy equipment to pull this off.

I tested this method against my favorite Mini Grilled Cheese Hawaiian Rolls to ensure the bottom buns stayed perfectly crisp.

If you love bite-sized party food, you might also enjoy my Baked Club Sliders or these tangy Alabama White BBQ Chicken Sliders.

Kentucky Hot Brown Sliders

• Publisher Storied Skillet
• Cuisine American
• Category Appetizer, Main Course
• Prep Time 20 mins
• Cook Time 25 mins
• Servings 12
• Calories 380 calories
• Rating 4.8 546
• Tags Kentucky Hot Brown, Sliders, Party Food, Leftover Turkey, Mornay Sauce

Ingredients

• 12 Hawaiian sweet rolls
• 1 lb sliced roasted turkey breast
• 8 slices cooked bacon, crispy
• 1 cup shredded Gruyere cheese
• 1/2 cup grated Parmesan cheese
• 2 tbsp unsalted butter
• 2 tbsp all-purpose flour
• 1 cup whole milk
• 1/4 tsp freshly grated nutmeg
• 1/2 tsp Diamond Crystal kosher salt
• 1/4 tsp freshly cracked black pepper
• 1 cup cherry tomatoes, halved
• 1 tbsp melted butter, for brushing

Directions

1. Preheat your oven to 350°F (175°C). Slice the Hawaiian rolls in half horizontally, place the bottom half on a baking sheet, and toast for 5 minutes until lightly golden.
2. In a small saucepan over medium heat, melt 2 tablespoons of butter. Whisk in the flour and cook for 1 minute to remove the raw flour taste.
3. Slowly pour in the milk, whisking constantly until the mixture thickens into a smooth sauce.
4. Remove the saucepan from the heat. Stir in the Gruyere and half of the Parmesan until completely melted, then season with nutmeg, salt, and pepper.
5. Layer the roasted turkey slices evenly over the toasted bottom buns, then pour half of the warm Mornay sauce over the turkey.
6. Top with the crispy bacon slices and halved cherry tomatoes, then place the top buns over the tomatoes.
7. Brush the tops of the rolls with melted butter and sprinkle with the remaining Parmesan cheese. Bake for 15 minutes until the tops are golden brown and bubbly.

Notes

• Always use Diamond Crystal kosher salt; if you are using Morton's or fine table salt, cut the volume in half (use 1/4 teaspoon instead of 1/2 teaspoon) to avoid an over-salted sauce.
• The pinch of nutmeg in the Mornay sauce isn't just for flavor; it contains volatile oil compounds that chemically enhance the savory, nutty notes of the Gruyere cheese.
• Keep a close eye on your roux when whisking the flour and butter; if it turns dark brown, discard it and start over, as a burnt roux will prevent the milk from thickening properly and ruin the delicate cheese emulsion.
• After a day in the fridge, the Mornay sauce will naturally firm up due to starch retrogradation, but it will liquefy beautifully again once reheated in a hot oven.

Serving Suggestions

These rich, savory sliders are best served warm straight out of the oven, but they pair beautifully with bright, acidic sides to balance the decadent cheese sauce.

• A crisp green salad tossed with a zesty lemon vinaigrette.
• A side of tangy Creamy Coleslaw to cut through the richness of the Mornay sauce.
• Pickled red onions or cornichons served on the side.
• A light, refreshing fruit salad.

Storage and Reheating

If you happen to have leftovers, wrap the baking dish tightly in aluminum foil before sliding it into the fridge. The cold air will cause the Mornay sauce to solidify, which actually helps prevent the buns from getting soggy overnight.

Do not even think about using the microwave to reheat these. It will turn your beautiful, crispy bacon rubbery and turn the buns into a sad, chewy mess.

Instead, place the sliders back on a baking sheet, tent them loosely with foil to prevent the tops from burning, and bake at 325°F for about 12 to 15 minutes. This gentle heat coaxes the cheese back into its molten state while restoring the crunch of the rolls.

Ingredient Substitutes

If you don't have all the traditional ingredients on hand, these simple swaps will keep your sliders delicious without losing their Southern charm.

1. Turkey: Sliced deli chicken or leftover roasted chicken works beautifully in place of turkey.
2. Gruyere: Sharp white cheddar or Swiss cheese can easily replace the Gruyere in the Mornay sauce.
3. Hawaiian Rolls: Standard slider buns or brioche rolls will work, though you may want to brush them with a touch of honey to mimic the sweetness.
4. Cherry Tomatoes: Sliced plum tomatoes can be used; just make sure to pat them dry with a paper towel to remove excess moisture.

There is something incredibly comforting about pulling a tray of these golden, buttery sliders out of the oven for a crowd. They disappear in minutes, leaving nothing but a few stray crumbs of bacon and a lot of very happy guests.