01 -
Preheat your oven to 375°F and have a 9x13-inch casserole dish ready for assembly.
02 -
In a large sauté pan over medium heat, cook the ground beef with garlic, salt, onion flakes, and pepper, breaking it up as it cooks until no pink remains.
03 -
Stir the cream cheese cubes, barbecue sauce, and Dijon mustard into the cooked beef until the cream cheese melts and everything is well combined. Set aside.
04 -
Place the Hawaiian rolls in the casserole dish, cutting some in half if needed to fill the dish completely. Slice off the tops of all rolls in one connected piece and set aside.
05 -
Leave the roll bottoms in the dish and sprinkle 1 cup of the grated cheddar cheese evenly over them.
06 -
Spread the beef mixture evenly over the cheese, then sprinkle the crumbled bacon on top. Cover with the remaining 1 cup of cheese.
07 -
Place the roll tops back on. In a microwave-safe bowl, melt the butter and stir in the sesame seeds.
08 -
Pour the butter mixture over the tops of the rolls, using a pastry brush to spread the sesame seeds and butter evenly across the surface.
09 -
Cover tightly with aluminum foil and bake for 20 minutes until the cheese is melted and the rolls are heated through.
10 -
Remove the foil and bake for an additional 5-10 minutes until the tops are golden brown. Let cool for a few minutes before separating into individual sliders.