Prepare the slider patties. Add ground beef, shredded cheese, barbecue sauce, Worcestershire sauce, onion powder, garlic powder, liquid smoke, and salt to a large bowl and mix until thoroughly combined. Using a burger press, shape into 8 slider patties and set aside.
Preheat a cast iron grill pan over medium-high heat. Place the bottom halves of the Hawaiian rolls on a serving platter.
Grill sliders for approximately 3 to 4 minutes per side, topping each with a quarter-slice of cheddar cheese immediately after flipping. The internal temperature should be about 160 degrees when the sliders are done.
Transfer cooked slider patties to Hawaiian rolls. Top each with a half-slice of bacon and a drizzle of barbecue sauce (about 1 tablespoon per slider) before placing the tops on. Serve immediately.
Notes
Shaping the sliders: We use this burger press to perfectly shape 3-inch diameter sliders. If you don't have one, you can separate the meat out into 8 equal-sized balls before shaping to get consistent sizing, or use a 3-inch cookie cutter or biscuit cutter as a guide.Grilling the sliders: You can grill these sliders on a traditional grill or a cast iron grill pan. To grill on cast iron, we use medium-high heat and cover the pan during the second half of cooking to help the cheese melt.Serving suggestions: Stick colorful toothpicks through these sliders and serve them on a large platter for cookout guests to easily grab and go! They also make a fun dinner with a side of sweet potato waffle fries.