Direction

1. Preheat the oven to 350 degrees F (180 degrees C).
2. Line a baking sheet with parchment paper. Cut rolls in half and lay bottom halves on the sheet. Place a piece of cheese on each bottom half. Set tops aside and cover baking sheet with a tea towel while working on the filling.
3. Heat oil in a heavy skillet over medium-high heat. Add onion and saute for 1 minute, then add ground beef. Cook until browned and crumbly, breaking the meat up with a spoon, and onion is soft, 5 to 7 minutes. Drain grease, then add garlic. Stir to combine and lower heat to medium-low.
4. Stir ketchup, brown sugar, Worcestershire sauce, Dijon mustard, and chili powder together in a small bowl. Add to the cooked beef, then stir in water. Simmer on low, stirring frequently, until thickened to your taste, 5 to 10 minutes. Season with salt and pepper.
5. Place a heaping spoonful of meat mixture over cheese on the bottom half of rolls. Cover the meat mixture with another slice of cheese. Replace the tops.
6. For glaze, mix butter, brown sugar, ketchup, Worcestershire sauce, and Dijon mustard together in a small bowl. Brush over tops of rolls, then sprinkle each roll top with sesame or poppy seeds.
7. Bake sliders, uncovered, in the preheated oven, until cheese is melted and tops are nicely browned, about 20 minutes. Serve with BBQ sauce, ketchup, or yellow mustard for dipping.