Kentucky Hot Brown Sliders are inspired by the original decadent open-faced sandwich that originated at Louisville’s Brown Hotel, with turkey, Roma tomatoes, and Mornay sauce, topped with bacon and broiled to perfection.
Preheat oven to 350° F (175° C). Line a 9x13" pan with parchment paper. Set aside.
To make the mornay sauce, melt butter in a small sauce pan. Whisk in flour and cook for 2 minutes. Add milk and whisk together. Bring to a boil and whisk constantly until thickened, about 2 minutes. Add shredded cheese and stir to combine. Remove from heat, season with salt and pepper to taste and set aside.
Cut the rolls in half and separate. Put the bottom half of the rolls into the prepared pan. Top with turkey, cheese, bacon, and tomato slices.
Add a spoonful of mornay sauce on top of each. Set the tops on the rolls.
In a bowl, stir together melted butter, Dijon mustard, dried onions and Worcestershire sauce. Pour or spoon mixture over the top of the rolls so each gets covered well and the sauce runs down the sides.
Cover with foil and bake for 20 minutes. Uncover and bake for 10 minutes more or until the tops are crispy and lightly browned.
Notes
Separating each roll before adding any toppings makes it so much easier to serve the rolls after cooking. It can be very messy and difficult to cut through them later.
The moisture in the tomato can cause the top bun to slide off during cooking. A helpful tip is to slice the tomato and lay the slices on a paper towel to draw out some of the moisture.