01 -
Preheat the oven to 350°F and line a baking sheet with parchment paper.
02 -
In a large skillet over medium-high heat, sauté ground beef with onion and garlic until browned and no longer pink, breaking up the meat. Drain excess grease.
03 -
Transfer beef to a bowl; stir in secret sauce, salt, black pepper, smoked paprika, and garlic powder until combined. Set aside.
04 -
In the same skillet, cook bacon over medium heat until crispy. Let cool slightly, then crumble into bite-sized pieces.
05 -
Using a bread knife, slice slider buns in half horizontally, keeping tops attached. Lay bottom halves on the prepared baking sheet.
06 -
Layer 6 slices of cheddar evenly over the buns, spread the beef mixture on top, then place the remaining 6 cheese slices and crumbled bacon. Cover with top halves of the buns.
07 -
Stir melted butter, Dijon mustard, brown sugar, and Worcestershire sauce until smooth. Brush the mixture evenly over the tops of the buns and sprinkle with sesame seeds.
08 -
Cover sliders loosely with foil and bake for 15–20 minutes. Remove foil and bake an additional 5 minutes for a toasted finish if desired.
09 -
Serve warm immediately, optionally accompanied by pickles, sliced tomato, red onion, or shredded lettuce.